Mechanics is the key part which usually lowers the marks of the NEET aspirants. So I would recommend you not to skip a single topic atleast in Mechanics. Mechanics is quite a intermediating subject but you have to know it in order to get good marks in NEET physics which will in general increase your overall rank.

For NEET preparation tips you may visit the link provided below:

https://medicine.careers360.com/articles/how-crack-neet-in-first-attempt#:~:text=The%20mock%20tests%20should%20be,exam%20and%20the%20important%20topics.

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