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Obviously, you can but the main question is it a right decision or not? Follow some step to analyse.
If you want change your course only due to homesickness then I don't think this one as a good decision because up to how much time you will this problem of homesickness after few years you have to go out to pursue your dream.
If you are doing it for degree only then you can go for it but you have to decide your field in which you want to go.
If you are getting some problem in hostel like loneliness, food, etc. then discuss with your parents about it.
As far as curriculum B. Tech. very good subjects/courses while doing B.B.A. you will be re-reading 90% of your subjects. While After B. Tech. you can do M.Tech. in various specializations like AI, CS and IT.

Hello,For pursuing B.A(Hons.) economics in Delhi University you need to have mathematics or business mathematics as one of the subjects at 10+2 level. The eligibility for the same requires the candidate to have passed Senior Secondary School Certificate Examination (10+2) of the Central Board of Secondary Education (CBSE), New Delhi with a pass in 4 subjects (English, Mathematics and two Elective Subjects) or an examination recognized as equivalent there to,with 55% or more marks in the aggregate of these four subjects. The two elective subjects could be from Physics, Chemistry, Biology, Economics, Political Science, History, Geography, Business Studies, Commerce, Accountancy, Computer Science, Sociology, Psychology, Philosophy and Biotechnology.

What is B.Sc. A Bachelors degree or B.Sc. is generally considered as an ordinary pass degree. A regular B.Sc. degree takes three to four years for the candidate to complete. This is referring to a general degree. For a special degree, it can take four to five years to complete. Moreover, the submission ofdissertationis not necessary in the case of B.Sc. degree. This happens when the B.Sc. is a general degree and not a special degree. If it is a special degree, then one has to hand over a dissertation. What is B.Sc. Hons? B.Sc. Hons means Bachelor of Science (Honors). It takes four to five years for a person to complete B.Sc. Hons. B.Sc. Hons is looked upon as an extraordinary degree. In some countries, you cannot find B.Sc. Hons degree at all whereas, in countries like Australia, Britain, Canada, India, and Sri Lanka, you can find B.Sc. Hons degrees awarded in colleges and universities. However, with regard to duration, you can receive a B.Sc. Hons degree from countries such as England and Wales in three years. Then, when it comes to dissertations, it is a must for a student to write a dissertation, to qualify for B.Sc. Hons degree. B.Sc. Hons degree. There is a general opinion that a student can easily complete a B.Sc. degree than a B.Sc. Hons degree. This is due to the heavy syllabus in the latter and that the student has to undergo training at a higher level to complete B.Sc. Hons degree. What is the difference between B.Sc. and B.Sc. Hons? The true difference between B.Sc. and B.Sc. Hons lies in the university or the country that offers the degree. This is said because you will see that some countries such as England offer the title B.Sc. Hons even for a general Science degree. Some countries do not. For example, in Australia to have the title B.Sc. Hons you have to study for four to five years, depending on your study stream.

Physics: Elements of mechanics, colligative properties, Laws of Thermodynamics: Mode of heat transfer:
Electrostatics, magnetism and electrodynamics: Outlines in optics and sound: Electro-magnetic radiation:
Radioactivity and elements in quantum physics.
Chemistry: The gas laws, properties of gases electrolytes, thermo-chemistry, chemical equilibria, chemical kinetics, concept of pH and buffer, molecular orbital theory, chemical bonds and the forces involved therein: periodic table;
Aliphatic and aromatic hydrocarbons, Organic substitution reactions, electrophilic and nucleophilic reactions;
Isomerism: structural and optical isomers.
Food Chemistry: Composition of foods, minerals in foods, water activity in foods.
Carbohydrates: Mono and di-saccharides, reducing and non-reducing sugars, mutarotation, starch, cellulose, pectins, plant acids and Proteins: Primary, secondary and tertiary structure of proteins. Protein denaturation, peptide bonds, amino acids.
Mathematics: Theory of quadratic equations; Binomial theorem; uses of natural and common logarithms;
Exponential series: Differentiation, successive differentiation, maxima minimal.
Differential equations; First order and linear Integration and integral equations.
Trigonometry: Ratios and their relations; Matrices, vector, determinants
Biology: Botany: Systematics of plants, Ecology, cytology and physiology of plants, Economic botany. Zoology:
Molecular basis of life, nucleic acids and their role in life, elements of genetics, organisation of animal tissues, elements in hyman physiology, endocrine glands, digestion, absorption, respiration, general physiology of animals, systematics of animal.
Microbiology: Historical development in microbiology, morphology, cytology; reproduction and genetics of bacteria, yeasts and molds. Culture technique and identification; stains and staining techniques, growth, nutrition and physiology of micro-organisms. Economic importance of bacteria, yeast and moulds, food contamination, control and food safety, general principles of food preservation, microbiological standards, biochemistry and nutrition, agriculture and dairy technology.