i am in 11th stage and i am studying in igcse board.i am thinking to change my board but i am confused that should i go in icse or cbse?

i am studying in 11th in igcse board and which is so tough for me.i don't get good marks in mock exam. so i am thinking to change school and move to another board either cbse or icse, but i am confused that in board should i go whose syllabus would helpful to me in future and to clear NEET.