As per the standards of NTA NEET in the last three exams,
If you are a coaching student (aakash/allen), NCERT and coaching materials are more than sufficient.
If you are not a coaching student,
Biology: NCERT (don’t leave even a line or diagram), MTG NCERT at your Fingertips, previous 14 years’ questions.
Chemistry: NCERT (again don’t leave even a line), MTG NCERT at your Fingertips, RK Gupta for organic (if you have sufficient time), previous 14 years’ questions.
Physics: NCERT (for theory, you can solve numericals too for concept clarity), Objective Physics for NEET by DC Pandey/MTG NCERT at your Fingertips, previous 14 years’ questions.