Hey aspirant! 

For JEE, you must know, that it's not important to mug up everything, you can give time to 2 among the PCM, but must know that your those two subjects must be really strong. There are many applications which are time flexible , so you can take online teaching, can ask queries and these apps also provide mock tests. If you are taking coaching, try to complete the mock tests provided by the institution. 

Time table- 

5:30AM-7:30 AM revision of formulas and solving new queries.

7:30AM-6:00 PM college

6:00PM- 7:00 PM- take rest, or move out for exercise

7:00PM-8:30PM- solve as much mock tests as possible. At this time try to focus on solving tough questions.

8:30-9:00 PM- dinner

9:00PM-10:30- have another set of revision. As you know,by this time, your mind must be enough tired, so try to solve easy questions.

10:30PM-11:00PM- sum up your day by doing college work (if any) or revise formulas.

I know this routine sounds hectic, but if done correctly, it will give fruitful results. 

Also track the average time taken to solve a question. And if you're stuck on a question, don't waste time on it, ask someone or keep it for later, but don't forget to get it cleared. Also focus on your strong topics and the weak ones. 

All the very best!

Hello aspirant!  The preparation of jee depends on how much a candidate can push his limits. A Self study of 8 hours is a must for the students regularly if you want a good rank in jee. For that you will have to make a habit of sleeping for 4 hours only. So since you reach home at 6:30 you can begin to study from 7-9 pm . After having dinner you can resume at 10 -12. In the morning you can wake up at 4 am  and study till you go to college.