UPDATE: Did the atf swap today! I am so happy right now. Car changes gears like butter! used to have a slight jerk from 1 to 2 but thats gone now. reverse engages almost instantly as compared to before where there was a delay. Will run the car like this for the next couple of days ~50-60 kms then do another flush and fill for the atf.
So far only positive results, no issues as yet!