Every year there are a lot of students who are cracking the examination of NEET being in a regular schooling. See if you have the right strategy then you will crack it. Now schooling is also important to some extent because when you will do your MBBS practicals then also the foundation knowledge in your 10+2 will be required. SO you have chosen the right way, just you have to focus 60% of your study period on NEET and 40% on your Boards. As the syllabus are similar you can prepare the theory at a time and practice MCQ's for NEET and broad questions for Boards. This will give you the training of managing pressure which you will get help in your final year of your MBBS or the course you pursue because at that time you have to do Internship as well as you have to study for your PG/NEXT examination. So prepare yourself from now and you will be warmed up to take pressure laterwards.

For NEET preparation strategy visit the link below:

https://medicine.careers360.com/articles/how-crack-neet-in-first-attempt

I hope this answer helps. All the very best for your future endeavors!