every babies are different when it comes to appetite. so there is no general rule of how much they should drink. they might drink lesser than others but as long as they put on weight gradually, it is fine.
they will stop if they are full
for mine, he drink 110ml from 3 weeks old to 2 months (3hrly) but when he reach 2.5 month plus, he refuses to finish his milk. sometimes took 50ml to 70ml 3 hourly only. till now 3 months plus still refuse to finish his milk, the time he finishes whole bottle will be night time when he is tired and sleepy.
i know some babies can take 120ml to 150ml around 3mths or more. you just need to observe and gauge for your little one:-)