9 month old not wanting milk?

Hi,
   my little boy is almost 9 months old, he has a really healthy diet and loves food but has started to lose interest in his milk. He has home-cooked food which is normally something like fish/meat and veg with polenta or pumpkin and then fruit and he will happily eat it all. He would normally have one bottle in the morning at 7 with his breakfast, then one at 9:15. He will sleep from 9:45 until 12ish then lunch at 12, bottle at 2:15, sleep 2:45 until 4:30ish, dinner at 5 and then a bottle at 6. Bath at 6:15, bottle at 6:45 and bed at 7. The routine works great but I was just wondering if he is maybe having too much milk? He does normally wake up once during the night?