As I gave neet 2020 , I feel that u should make ncert thebasebookand the best book to Clear concepts ,the that I suggest u are:
Biology:ncert and dr. Ali of sasa publication
Chemistry: ncert and o.p.tandon books for organic and inorganic chemistry and for physical do the ncert and arihant for numericals
Physics : ncert for basics and for numericals,ucan refer to universal self scorer
and also do as many as previous years papers from MTG explorers
And at last 3 months of preparation u can use MTG’s ncert at your fingertips
Hope this will help u, all the best!!!!!