struggling to keep up

Hello all CM's NM's FM's and so on my brother became a pro a few months ago and for a time he's done well against other new pros and 2000 players but now he's finding it difficult to keep up with competition and everything that he usually does to study he tripled it but now he's searching for a new training program so he's asking what other CM+ like to do when they study or is there a certain training method they adopt he's even asking A class players although he can beat them pretty easily now so just to help him with his search is there something you masters like to do in training that no one else does in regular training. (Of course I don't expect you to post it here where everyone can see unless you don't have a problem with that please can you message me thx). Also to add because I don't want my bro to get to much stronger than me is there any non-pros that do something different or you like to add on with your training.