I've decided to give endgame study high priority, and I'm studying Dvoretsky's Endgame Manual, though also glancing around in other books. The issue is, that I'm finding Dvoretsky's exercises really, really difficult, and I can easily spend an hour or so on a single exercise and still miss something. This goes even relatively simple looking pawn endings.
I would like to know, from players who consider themselves as strong endgame players, if it sounds reasonable to indeed spend so much time per exercise? Or maybe, a more recommended course of action would be to spend 10-15 min on each exercises, look at the solution and try to internalize what the thought process should have been to get it right?