You have an ideal amount of time to study and get great marks in neet provided you work hard.
To start physics, you’ll firstly have to learn basic maths , and vectors cause these are two things that will keep repeating itslef through your journey and you’ll have to learn basic units and dimensional analysis, once you’re basics are clear you can go on with kinematics, rotation etc in your course’s order ,but it is important that you learn tge concepts and not mug everything up. I personally started preparing my physics afresh in 2020 may- June through lakshya batch and then yakeen batch on PW and that’s how my physics became my strong subject from weak subject.
For chemistry you should start by focusing on the basic concepts of chemistry where you’ll learn quite a few things and it’ll give you the confidence to learn the rest , because if you start with structure of atom , even though it’s an easy chapter , you’ll get intimidated by it Initially so you shouldn’t do that first rather come back to it after building some concepts , I remember now knowing where to study structure of atom cause I didn’t understand from my college professor so I was searching on YT and I came across alakh sir lecture after which I completely understood it. And when you face organic chemistry, the first chapter is of high importance even though you’ll get 1 or max 2 question from GOC what you learn there is a base for 11th and 12th organic so take your time , read slowly with good lectures and make great notes for it , this way GOC will become a little easier.