Looks like he's coming along.
Very nice bite. I remember when I took my friend's German Rott out on the field to work him, and he had been bragging about the dog being a 'natural' and this and that. The dog absolutely flopped on the bite. He couldn't hold a fly with that bite.
Looks like you are finally feeding him too, . Looks very good. I'm putting about 3-4 lbs on Weda for Winter as well. I've doubled her intake and it's barely pushing that 3lbs.