Hello student yes it's 100 percent wise to do both class 11 and 12 with Neet coaching as almost all Aspirants start their preparation in class 11 for Neet entrance examination.

Prefer NCERT to build your basic Concepts and make sure that you solve the question and example of NCERT before jumping to any reference.

You can also subscribe to careers360 knockout package for preparing and qualifying Neet entrance examination - https://www.google.com/url?sa=t&source=web&rct=j&url=https://learn.careers360.com/knockout-neet-may/&ved=2ahUKEwiy94DK_MXuAhUyyjgGHXtLDKIQFjAAegQIAxAC&usg=AOvVaw3IQ2iNLvR11fH2dBguo0xU

Neet Eligibility - Candidates must passed or appearing class 12 in Physics chemistry and biology with minimum 50 percent marks from a recognized board.

Feel free to comment if you've any doubt

Good luck