Hi,
Have you considered a crate?
It will give him a safe secure space, where you know he can’t get into a lot, or create much mayhem.
It may be a challenge now, as he isn’t used to it, but it may help your piece of mind to know that any damage will be contained.
Alfie has trashed 3 beds, he now has the outer part of one and a cheap crate pad, to be honest I put it down to puppy chewing and unexpected results for him, so he kept on.
He’s got used to it and goes in several times a day, if we’re both involved so can’t keep an eye on him, or when big deliveries arrive at the house.
It’s also where he goes for enforced nap time, when he won’t settle on his chair.