Crate training our 3 month old puppy (corgi)

So we hired a professional dog trainer for our new puppy corgi and we are working on crate training. He’s a lot smaller than his crate so I made a divider in the crate to make it just big enough for him to stand up, turn around, and lay down. But after doing so and realizing how small of a space that is, I feel horrible. I know it’s what it takes to train him but me and my partner are really struggling with it. Should I at least put a puppy bed in there for a little bit of comfort? He’s whining in the most pitiful way and we just feel like horrible owners 😭