@Divyam_Agrawal Last year, it took around one week to declare.
Also, its FITJEE Aits, dont get disheartened by marks. It really doesnt matter. Just try to improve. The importance of these mocks is to give the exam temperament and put you under uncomfortable conditions and thats why AITs helps even though the paper is way above Mains level.
Never prepare to do well only in Aits, for example Aits takes questions from Cengage, that doesnt mean you solve questions from that book(all of a sudden), then even though you will get better marks, it will not help you in the long run. Remember that the final target is JEE Main 2019.
So its always better to give multiple test series. You will benefit from each. Some are like actual Main, some are tougher, some have more competition.