splendide - That's only a small amount of formula per day, I was going to say that before I read you asking.
From 3 months to 6 months recommended amount (according to SMA tin) is 5 feeds per day of 6oz - so 30oz per day.
Your LO is tiny though so I'll give you the 2 month figures off the tin, which are 5 feeds of 5oz - so 25oz per day.
I make up 7 6oz bottled per day, she doesn't usually finish the bottle. I don't track exactly how much each feed - sometimes she leaves a lot, sometimes nothing, and everything in between. Fed 2ish hourly through the day. Usually 8am, 10am, 12pm, 2.30pm, 5pm, 8pm, 11pm. DD is huge though, 91st plus centile.