Glad to hear he's doing well
I met a woman while on vacation that had adopted a dog from a shelter in Mississippi a katrina victim. She had heartworms & while they're getting treated they can't run around at all. She said she had to kennel her all the time she would take her out to go potty and right back in the kennel.I know it sounds cruel but that's what has to be done.
I wouldn't keep Ernie in a kennel at all times like that but if he's getting wild you could do that.