as I cleared neet ug so I find myself capable to answer this question,neet ug require high determination,strong will power to achieve the goals
basically in past few year neet exam is totally ncert based
for biology-you need to just read the ncert line to line,clear each concept and do a lot of question practice
for chemistry- inorganic is similar to biology you have to read ncert and question practice
organic-ncert+lots of question practice
physical chemistry,physics-learn the formula and lots of question practice for clear the concpt