inside the crate, start shutting the door for a few seconds. a great time to start this is when he's eating inside the crate. while he remains calm and happy, praise him, then open the door so he can exit should he choose. gradually increase the length of time you leave the door shut. once the dog is settled with the door closed for a few minutes, briefly leave the room, then immediately return. avoid going straight to the crate but after a few seconds let the dog out. slowly build his tolerance of time spent in the crate.
now the dog is happy in the crate, you can start to 