Thanks for requesting this question and i hope i could help you through my answer.:-)
So i too was a dropper and i will only tell you what i followed. The most important thing on which i would like to emphasise is CONSISTENCY.
I cannot make a routine for you. I can only tell you some points which you should consider while making your own routine.
- Make a to do list and try to follow that. This will ensure you don’t waste time.
- Try to include all three subjects in a day which i personally did but again that totally depends on you.
- Make sure you revise periodically especially volatile topics like inorganic and bio.
- Do not avoid tests and always rectify your mistakes.
- Since the question is about dropper..so you already have gone through the syllabus i assume ..so its better not to waste time on doings topics which are already done and waste time. Make use of your time in doing revisions.