Time management was what I messed up a bit when I gave NEET in 2018(feels like a decade passed since then)
The most common mistake however is judging the difficulty level on the basis of the first few MCQs you see….. Sometimes when you start you may find 3–4 continuous difficult MCQs but don’t get demotivated and disheartened by that ,the whole paper won’t be this hard …. Similarly if you encounter pretty easy questions in the beginning don’t take the paper lightly and end up making silly mistakes