Aptamil hungry baby

My baby boy turned three months old on the 9th of September and he now sleeps through the night from around 8/8.30pm too 7.30/8am and during the day takes 4 bottles in total. He mostly takes 8 ounce bottles but can sometimes take up too 10 ounce bottles, due too myself and my partner having to add extra, as he's still hungry after the 8. He has always been quite a hungry baby and I found we had to increase his ounces quickly from birth. I have recently been advised that him taking 10 ounce bottles may be a sign that he needs too move onto hungry baby milk so he's not taking as much milk and also isn't still hungry. I'm not sure whether or not too move him into hungry baby or maybe increase his feeds too every 3 hours so he has 5 bottles during the day rather than 4, any advice?