Cockapoos seem to be really noisy dogs! Dylan is dreadful and barks for any reason he can think of. But mainly he barks when he plays or wants to play or let off steam. So maybe Axle is just getting more energy or wants more play or walks than he has up to now. And as his bladder control gets better he might not want to pee as often. The main concern I have is that they seem to be really high energy dogs, and I think Dylan probably could do with more exercise than I give him, but we all have busy lives so I guess there has to be a compromise. Maybe instead of taking him out every time you could try throwing a favourite toy for him to fetch and run around indoors?? Not at 3am though!! There are lots of barking remedies, including using a water spray which might train him not to bark as much. Tell us how you get on, as this seems to be an issue that I'm facing as well.