+1
I would lay down some absorbent pads and train him
secret is to walk the dog multiple times per day and not wait until he accumulates enough to wet the pads or the floor. This means walking him 5-7 times per day. This is how he will get trained to pee outside only.
Then gradually remove the pads and only have them on the floor for emergencies if you can’t walk him.Good on you for saving the pup!

