The night I got Mayzie at 8 weeks old she was crated right next to our bed and she cried the whole night. The second night, we put her in the crate by our bed again and she was quiet all night and never cried again after that.
I would suggest ignoring him but giving him a couple potty breaks throughout the night and he'll learn that crying doesn't help and start to sleep through the night. Sometimes it helps if you put something with your scent in the crate with them and something to snuggle with because he probably misses sleeping with his brothers and sisters

