I wouldn’t add any more food to his meals. Just feed the amounts that you normally would. He’s used to getting treats, bones, etc so that may be making the difference but I would still hold off and add them back into his diet slowly as you planned. Don’t rush anything especially when he starts with those cute puppy dog eyes and you’re tempted to give him treats. He’s been sick on and off for at least a couple of weeks if not a little longer even so his tummy needs a little more calming down inside.
