Sounds like he ate quite a lot! @Nat said it all pretty much. Make sure you offer water with meals too, he might be thirsty as well if he wants milk after every meal.
Milk is their main source of nutrition till 1 so if he's had enough food I'd let him have his milk 🙂 he sounds like a good eater for his age, he'll up his food intake as he gets older. Sounds like you're doing a fab job though and I wouldn't worry too much about him eating more solids
He won't and that sounds like a lot of food. My babies are only a few weeks into weaning but I've read that it's normal for them to want milk after eating solids so I'm not expecting that to change any time soon