My son is 4 weeks and been having 2oz of breast milk or formula every 2-3 hours just this past couple days he's been hungry more and fussy so I upped him to 3 oz to see if that'll help. Well he still doesn't even last 2 hours sometimes!!! I don't wanna give him 4 oz cuz he was only 5 lbs when born and think that it'll be too much because he only like 6 lbs now.

Is he going thru a growth spurt ?? And that why he always hungry now ? And do u think it'll be too much to do 4 oz already at 4 weeks and him being so tiny