Hey there

In order to score 120+ in NEET chemistry paper you need to do following things

1. Give time everyday to chemistry atleast 2 hours.

2. Chemistry is a scoring subject so in order to score good focus on inorganic too which most of the students leave.

3. For inorganic solve NCERT first then go for MS chauhan.

4. For physical chemistry p bahadur is good and NCERT is a must.

Check our link for e-learning preparation of NEET

https://www.google.com/url?sa=t&source=web&rct=j&url=https://learn.careers360.com/knockoutfull-neet-may/&ved=2ahUKEwjSgdXho7jpAhWKzzgGHee1BDQQFjAAegQICRAB&usg=AOvVaw34pQhyIev0EhF3q9UoBb7v

Good luck