WFH and a staffie puppy.

I heard Staffies are notoriously clingy and mine just turned 11 weeks. I've had him for about 2-3 weeks and I'm starting to notice he's getting bad separation anxiety/FOMO when I leave the room.

I bought a playpen for the living room and tried to give him treats and let him sleep in it, do enforced napping, lights out, soft music, but no matter what I do he will go berserk and try destroy the pen, pee frequently every where, with very little sleeping happening.

Honestly, the only thing that settles him is him sleeping on my lap or feet, but I can't keep that up personally. I took a couple weeks off work to get him situated but now I have to start my routine again WFH.

if I leave the room while he's in his pen he wails so loudly, and if I stay in the room ignoring him he just whines but he's not really getting much sleep in there. So now he's becoming a terror at night–biting, zoomies, barking, being aggressive. and it's hard to calm him.

I tried bully sticks but that made him so much worse after, and I've tried licking mats which work for like 5 minutes.

Any advice to get a rambunctious staffie to settle in their pen would be great.