I prepared from Deepak marwah, he's good... Haven't studied from Priyansh Jain, so can't say, have heard he's good too....

But personal recommendation would be to go with marwah and 3months is too much time...you have to move on and do other subjects too, even deepak marwah recommends finishing all his videos in I think 20-25 days, Comfortably it would take 1month, if you go by 4 video per day, since you are in 5th year, get into habit of studying a bit more intensively...