K.O.
I think 4 months is a little early for a formal schedule, but I do think 11 pm is too late for a little baby to go to bed. A 7-8 o'clock bedtime would be more appropriate, and maybe she would wake up before you go to bed, you can feed her, and then she could go back down for the night. We started putting our kids on a schedule around 6 months or so, but not for naps as much as for bedtime, since we are also never home (especially my youngest, who is almost 2, with big brothers who are 4 and 6 and don't nap anymore we didn't have the time to go home and do naptime with her. At 6 months we kicked everyone out of our room into their own room and kind of following the sleep training method of no longer going in if they woke. They stopped waking in the middle of the night after 2 nights and have all slept through the night since. That method isn't for everyone, but it really worked for us. Our kids are the best sleepers, they can sleep anywhere on vacation, at grandmas, and never wake up at night. As the baby gets older, she will stop sleeping so often. Around 6-8 months they start only doing two naps a day, one in the morning and one in the afternoon (this seemed pretty natural) and then around 1 or so my kids gave up their morning nap and just took a 2 hour nap from about 12-2 every day. Good luck!