[GeorgiesMomma]

Georgie is 7 years old and barely weighs 4lbs. I think it depends on their body frame. I am sure he isn't underweight especially since his check-up went well. At his size I would just leave food out all day. Georgie lets us know when he is hungry now but when he was younger he always had access to food.

Also try adding some plain yogurt with his kibble. It's great for them. I wouldn't leave that out all day but maybe feed him that in the morning and free feed dry kibble through out the day.