my baby is 11weeks, gg 12weeks in few days too. her night feeds is still 2-3hrly,60mls each time. my baby used to stay awake for night feeds too. what i started doing was to feed before she cry. like example, her next feed is at 2am but not sure if she really wants anot. she still being swaddled so I look out for noises and movement. if at 2am no noises and movement, i will come back at every 15mins. the moment i hear some noises for abt 5-10s,i start preparing her milk to dreamfeed her. so she wont be crying and stay awake after that. so far shes ok with the routine ive set.
my baby's routine is every 1hrly in the day
7am wakeup,play and feed
8am nap
9am wakeup,play and feed
10am nap
etc
8pm bedtime.... night feeds 2-3hrly till 7am