Regarding house training, I would start again from square one as though he were a puppy and take him out very often so he has less opportunity to go inside.
Allowing the student enough time to process the request before repeating is helpful because the student may have to stop processing the original request and begin from square one each time the request repeats.
In Nashville, it was back to square one for Urban.
Even skipping one treatment will set you back at square one again.
Now they were back to square one.