No worries dear !
Always keep your self motivated , take breaks and spend time with your family and friends, practice some yoga and breathing exercises to keep urself calm and cool
For neet prepration
My dear for Biology Ncert should be your Bible.
For chemistry particularly organic and inorganic ncert should be your Bible
For physical chemistry and physics practice standard modules and ncert all questions whether of chapter end, examples,or in text questions as you have to practice a lot of sums and read theory portion
Try to solve last 10 years MCQ questions.
You can find free test papers from Google , it provides PDFs of various institutions or download online apps like Vedantu, Resonance,Career Point etc
Before 1 month of exam try giving proper 3 hour mock test like exam so that you can be confident and well versed in your portions
Revise your portions daily by setting targets and give equal weightage to all chapters of class 11 and 12