Jaxx's potty training clicked around 8 months totally. I had Jaxx's crate in our bedroom so he would wake me if he had to go out. I set an alarm for 3 am and took him out until he could hold it through the night.
Are you cleaning any areas where he has accidents with an enzymatic cleaner. I highly recommend Natures Miracle. Soap and water doesn't take the scent away and you need an enzymatic cleaner to get rid of the scent.
Since he is going in his crate my biggest suggestion would be to take him on a long walk before putting in his crate so he is tired but also has plenty of time to relieve himself.
Putting Jaxx on a feeding schedule helped greatly with potty training. If you know when he eats you can judge when he has to go potty.
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