I was told by a lactation consultant tt for exclusively breastfed or even bottle fed breastmilk babies, there is no fixed amt. It really depends on ur baby so just feed on demand. My baby also still cries for more aft feeding, esp in the first 2 months. For me, I mix feed with formula. For formula he usually drinks ard 150ml and when I bottle feed him BM, he can even drink more than 150ml as BM may not be as filling as formula but there's nth wrong with tt either! So don't worry abt it.
follow baby's cue. baby tend to go thru alot of growth spurt before 1yo. my baby at 1 month old drinking 120ml sometimes nurse again after milk.
For a month 15 days, I think that amount is okay! Follow baby’s cues!
Did he burp after the feeding?
Best to consult with pd