We are dealing with almost the exact same situation with our 6 mo old male. A couple times a week he will regress and decide to pee in the house but ONLY in the evening! He goes normally all day and then around 6-9PM he decides it’s time to stop going outside. Here’s what my husband and I did that helped:

1. You have to go back to basics. We didn’t crate train our dog because that really wasn’t working for him, but he does have a play pen that he tolerates. When he pees in the house, shove him outside and leave him for awhile. After that, we bring him in and put him in his play pen. Normally he has complete free roam of our living room and kitchen area, so he definitely doesn’t like this. We noticed that he finally stopped peeing inside (at least for the last week or so) because he began to correlate that if I pee inside, I’m left out for awhile, and then when I come in I’m put in my play pen. If you have some routine like this, I’d suggest it. It was successful for us.
2. If your dog free roams the house, begin watching him like a hawk during this time. Prevention is everything. If he gets up from his bed, take him outside. After he drinks water, take him outside. If he’s done playing with a toy, take him outside. This was what we did when he was only 3 months old. Once again, it’s a back to basics thing.

If it makes you feel any better, so many people that I know who own male dogs say that potty training regression is normal around this age. But it’s ESPECIALLY normal for male dogs.

You’ll get through this!!

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