Before we got Pan's allergies under control he got inter digital cysts. Now we have him on a strict diet and as part of his cleaning ritual we clean his paws with gold listerine. The antiseptic cleans out anything that may be trying to grow in there and the alcohol in it dries quickly to keep the moisture out of it. Trick is to keep it as dry as possible. Pan hates standing in water to the Epsom soak didn't work for us. Hope you baby feels better soon!
Try throwing their favorite ball in with them. It's the only way mine will get into the tub willingly.