I also had trained my doggie a mini schunauzer to go on command, or go in a certain spot. I brought in a raised bed with dirt, and a bush on it. The cats LOVED it! and the dog had a lil spot to go pee if we were not back in time. It was 3x3 and sat in the back end of the family room. I just had to make sure it had water. Instant park.

I hope you find a way to help the lil thing. Is it the poodle in the avatar?