My DD is in a transitional phase where she eats every 4 hrs, with 1 hr 50 minutes wake time. To make up for the 10 less minutes of awake time she usually sleeps 2 hrs 10 minutes (so it's 1:50 + 2:10 = 4:00) or we have a bit of awake time before her bottle, to it goes EASAEAY sometimes.
I was told this is fine with transitional babies not quite at 2 hrs awake time, but not eating well before 4 hrs.