Good question, if it's working for you then I would say continue this for a little while.
My almost 11 month old is barely drinking milk while I'm gone at work. Sometimes she will drink one 5 oz bottle. BUT I BF her a lot when I'm w/her. In the morning at 4/5 a.m. she eats probably 5 oz, then at 7:30 a.m another few oz. Then she drinks a 5 oz bottle when i'm gone, then I BF her at 6 p.m. and again for bed. So she's still drinking plenty of BM but hardly any when I'm not with her.
Have you tried milk in a sippy cup? My 11 month old eats very well too.
I would say if your child is a little on the small size make sure they're still getting plenty of milk, all of what you said sounds about normal.