Thanks, I went ahead and ordered the Omega One Juvenile pellets. We try to give him about a head size a day. We will cut back a bit and supplement with more veggies, like you suggested. He actually ate his red lettuce this afternoon with no issues.
We usually feed him 3 times a day, depending on work schedule. It seems easier to feed him a little every time (at least on us given his begging, haha), than all at once. We could switch to feeding him twice a day though. Thank you again for all of your help and advice!