i am in 11th stage in igcse board but now i am thinking to move to cbse or icse board as igcse is tough. so should i go in cbse or icse?

i m in 11th std in igcse board and i feel it very tough and not able to score good here which is important if i want admissions in good colleges of India.so i should go in icse, cbse or state board? which would be more beneficial to me in future and i wish to go either for pharmacy or mbbs