Hello,

I would like to  there is no fixed hour or timings one needs to study in to score.

One can study at Day/Night according to their own comfort and score good marks.

What matters is how much dedication and hardwork you put into your studies rather than the number of hours you study.

You can learn more in 5 hours with better dedication than studying 15 hours with no dedication at all.

I would suggest you to visit the careers360's link given below which has some tips to score good marks in NEET considering your interest in medicine.

The link for the same is:https://medicine.careers360.com/articles/how-crack-neet-2019-600-plus-scores

Hope this helps and if you have any more query, feel free to comment down your doubts in the comments section below.

All the best!

Hii Sheikh to spend your time in these three subjects physics, chemistry and biology you have to divide your time accordingly,like in the subject you think you need more time to study you can dedicate 1 and half for it,then one one hour for each two subjects by this you will get time for every subject, Good luck