Yeah, no problem. I read through it, and I definitely agree that keeping him in the duck house isn’t a good solution. Could you possibly make something like this?
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It is just a simple A-frame tractor. It took me about a few hours (5-7) to put it together, and mostly with scrap wood. You can find plans online. I have found it immensely helpful, and used it to seperate chickens, young chicks, ducks, rabbits, even my dog

it would be a good solution until hormones calm down. You might even be able to fit a small kiddie pool in it. That way he could get fresh air, room to walk, etc.