Sure, he'll get used to the crate - different dogs, different lengths of time are needed.
Just make sure you don't respond or go to him when he's howling like a baby. Reward him for getting in the crate and when its time to take him out. He'll soon understand that the crate is his "room" and its good for him.
Edited to Add:
BTW - breeder probably already explained, but just in case. If the crate is too big for him right now, he may end up going to the bathroom in it. What you'll have to do is cut down on the crate size, block off the rear section using cardboard/zipties or such - leave him just enough room to be able to turn around and lay down comfortably. Rule is, they won't poop where they sleep.
Also, if you havent already, introduce him to the kennel several times a day - when youre in the room as well. Reward/praise him going in, ignore him - and when he stops whining a few minutes later, reward/praise him again and let him out. If you keep it fun - he'll end up enjoying it.