I had this same problem. I mainly auto pilot but did adjust the intensity of training when their condition is low. Seems to have made a diffence If you are leaving it to your coaches my top tip is to not neglect personal schedule. Leave them to a coach but check they are on the path you want you prospects to go. Like make sure they are traing for positions that fit your formation. Also if you have any player your scout/coaches say have amazing potential focus on giving them extra training on their weak spots. Like one regen I have has a coach report saying he could be a top Premier league player but lacks decision making. So I added a secondary focus to the training my coach had auto selected which addressed this weak spot and he is rapidly gaining points.