Hello Shubangi, NEET is one of the toughest exam which has a time constraint, inorder to solve bits faster, i recommend you to firmly have a good knowledge on the core areas of biology, I will give a list of books in the order of preference, they are-

• Biology Vol 1 and Vol 2 by Trueman

• Objective Biology by Dinesh

• Objective Botany by Ansari

• Pradeep Guide on Biology

• GR Bathla publications for Biology

Hope this helps.

Thank you.