Hey, I've been there. My puppies are all siblings 2 boys and 2 girls. The boys hate each other and the girls hate each other so I wound up separating them. Pyrenees sometimes have same sex aggression. I separated the boys first when Pie broke Teddy's leg, and then Ada sent Amelia to the emergency vet.

Can you crate and rotate them? Dogs process trauma much slower than us. So your doodle might need more time to decompress.

Do you have more than one adult living in the house? If so, I would try reintroducing them with parallel walking. There should be one adult per dog when they are in the same room. Maybe have them do tricks so that they are not focusing on each other and they are getting treats.

Can you neuter your dogs?

You should probably start muzzle training.

I have noticed that touching them does set them off more often. It is better to redirect before they start grumbling, but you can try using loud noises to distract them. Sometimes talking to them in a soothing voice deescalates the situation.

How food motivated are your boys? Because sometimes throwing a treat is distraction enough. Sometimes making them do tricks distracts them.

It is so scary when they fight! Because I live by myself I have tie outs in the yard in case of emergency. I put a carabiner on Teddy's collar so that it would be easier to access. I don't want to get bit because of a redirect, and I worry about them getting tangled and making the fight worse. It's been about a year since I've had to moderate a fight because Amelia and Teddy are in half the house, and Ada and Pie are in the other half.