Hi!, after 12:30, eat lunch do a 3 hr session from 1:30 to 4:30. Then, take a 1 hr break and do a brief session from 5:30 to 8:30, then go for dinner and sit down again at 9:30. Study till 12, revise concepts and sleep.

Now, this is just a rough schedule to encompass two key points-

1. To develop the ability to sit for 3 hrs with good concentration.

2. To learn and practice concepts adequately.

The timings are fleixble, but ensure that the durations remain fixed. Take breaks, and divide the concepts accordingly.

To divide it topicwise, here is a link which will help you further-

https://medicine.careers360.com/articles/how-to-prepare-for-neet

This will surely help you further! All the best