You need to stop feeding him, fish can survive without food for a week or more. That way his digestive system can clear out. Short body are prone to bloating from overfeeding and high protein diet.
Im not sure if mine is a short body, I got him second hand. But after treating with clear his belly appears white and bloated. He can still swim but does this seem like a digestive issue? He hadn't eaten for about 10 days prior to 5 days of deworming. And is still uninterested in food, tried peas. I'm about to add Epsom salt to tank and crank heat to 88.