Dear Diya, since you are scoring around 300 consistently in ALL INDIA AKASH TEST SERIES then you can expect your score to be around or above 400. Yes that's true because the level of paper that they set is little bit hard as compared to the actual NEET exam.

Also assuming marks from AIATS is not good. Who knows now you are scoring 300 in AIATS and in NEET you may score 500. You should be consistent with your hardwork.

All the best

Hope this helps