Bran level cap | Undermined season

Hi all, I know bran is our companion for the rest of TWW. But, what will happen to his level once we start undermined (S2)? Will it reset? is the level cap going to increase? I have bran at level 57 atm and the gap between 57 and 60 is quite big for some reason, so before I spend some time and make a decision I fear I might regret I thought I’d reach out for an answer : p

Ty in advance.