He's trying bro! he's recently gone back to his Muay Thai roots so he's not loading up so much, and he's always training with BJJ blackbelts. Julien Williams (pro fighter too) is his main coach and now Jacare is there full time too so Perry, Alex Nicholson and Perry's other cornerman Phil Rowe are all learning together under those guys. Perhaps it's the sparring where he's been missing out, but it looked like he'd regressed in the Max Griffin fight, especially if you compare it to his UFC debut against Hyun Gyu Lim.
I presume everyone's a PMP hater by default. I mainly offer the info about his setup because I don't think he's going to change camps, Perry and Nicholson are basically family, Alex's father is Perry's other cornerman, and also the one who found that gym for them both and steered them towards a cleaner way of living.
