Schedule, IMO, is key! Get him on a schedule. Are you free feeding him?
If so stop and put him on a feeding schedule. Buddy was trained by 5months.
Fully trained because of a schedule. I never varied from it rain or shine.
It payed off. He was crate trained as well and I couldn't wait to get rid of it!
I got up a six, walked him first thing to potty, fed him at 6:30am and played with him for 1/2. Back in crate while I got ready for work and out for another walk at 8:00am. Back in crate and off to work. I came home at lunch for 6weeks to let him out and walk him. Back in crate until 5:30 for another walk.
Feed him at 6
opm and back out around 7:00pm and then we played. I kept him out of the crate during the evening to play and enjoy him. He had a couple pee accidents. Back out around 9:45 and into the crate for the night.
No water during the night! Whenever he drank water out of the crate I knew we would have to go out in about 20mins. I also gave him a tiny piece of
liverwurst each and everytime he potted outside. Trainer told me that.
It has to be a treat he would not get any other time. Within 6 wks crate was gone and he was fully trained. He stays in the house for 9hrs while I'm gone and has never had an accident. Schedule is everything.
Good luck. Once he is trained of course water should be available to him at all times.