In my opinion I don't believe so, as long as he or she is active and happy I would feed he or she all it wants. Just make sure it eating the correct food. My Sulcata Sammy is also two years old in Dec. He also weighs just over 9 pounds , eats like a pig, always very active, happy and now with his size he his getting demanding we he wants someting to eat. Have not weighed him in almost a month.
My 2 year old is almost 9lbs is he or she overweight