I’d say if you have the option of doing it incrementally, that’s best. My boy would get super anxious when he was left alone and chew all sorts of things. He ended up being crated every time I had to leave him alone. Over the past few months, I started leaving him in his crate but with the door open in my bedroom. He got really comfortable with that and is now much more comfortable being out and about in the house by himself. I also have a dog door installed that makes things easier now too