Yikes! That is scary. What are your after-care instructions from your vet? Do you keep him at home or a boarding barn? I would enlist the hlp of friends if you work & aren’t able to keep an eye on him during the day. Were you told to slowly work his feed rations back up to his normal amount? Is he drinking? Did they check for ulcers? I use SmartPaks Smart Digest Ultra–you may look into this as a supplement for him.