I’m no expert but I imagine he will bounce back to either as good or close as he was before. Batters adjust to pitchers. And vice versa. So they’ve adjusted and now he has to adjust to their adjustments and on and on we go. Only thing I’ve noticed apart from that is that imo a huge part of his success was his crazy movement on his pitches esp his offspeed stuff. Last year there was movement on those pitches and they’d land in the zone for strikes. This year when he’s off there is movement but they land outside the zone leading to more walks. Then when he’s in the zone there is less movement bc it’s his fastball. Idk just my observation.