babies can sleep straight for 5-6hrs. and babies need more sleep for growth. you can feed baby, katulad ng ginagawa nio, while tulog sia. i-elevate ang upper half body ni baby kapag nagpapadede ng nakahiga. if 4oz, give milk after 4hrs. if 5oz ang naubos, can give milk after 5hrs. kapag antok pa ang baby, hindi nia mauubos ang milk, unless gutom talaga sia. this is called on-demand feeding.