As you all know I have 4 lab pups ...3 are HUGE and than theres "little" man. They are 3 weeks today and little man can barelyt hold his head up yet...hes trying to today my husband said but not active or anything like that. Hes eats off his momma but do you think hes needs something more like a supplement of pet formula or do you have any suggestions?? I am really worried about him.