I feel, Dr Najeeb is good for MBBS undergrads. who have plenty of time to read and learn. but if you are uptight with your schedule and time, you should go over only where you are really not getting anything inside... meaning you don't understand a single word of that topic. but rest, i don't think nazeeb helps much.
kaplan, DIT, and UWorld with reading is the best to study precise and well.
just my viewpoint.
I have seen, kaplan, najeeb, fit, falcon, you name it.... so, disposing this viewpoint. waste of time to watch each and every video of najeeb