Has anyone done crate training? I am trying to crate train Rambo. He is good in there, when he wakes up in the middle of the night. I take him outside and he goes, and he goes back into his crate. Also we go first thing in the morning when he wakes me up

. But I want to put him on my schedule that I have for work. Any suggestions? I know it will take time and I have learned a lot in the past 3 days that I have him.
Thanks