Bascially, there's a sleep during each feed cycle-- generally a feed cycle is 3 hours, but also depends on your infants individual differences (ie. birthweight)
So, when she has her feed, keep an eye for her first sleepy cue (a yawn) and then start her wind down routine. For a newborn, keep awake times short, or you're going to overtire and overstimulate your infant, which can result in short naps (45 min. naps) and difficulties setting to sleep. Newborns and young infants have a very short window of opportunity, in order to fall asleep with ease. If she's yawned more than twice.. then her window is starting to close, her body will release cortisol which is a stimulant hormone, and she will have a rough time settling to sleep, will be restless in her sleep and will wake up screaming after 45 mins (1 sleep cycle).
Most newborns/young infants will have a little cat nap after the 4 ish feed.. this is a short little nap, that will give her enough energy to get to bed time. It's difficult for a newborn/young infant to go from 4 pm until bedtime of 7 pm.. usually it will result in multiple nightwakings and difficulty settling into sleep. Also, it will show in her behaviour as her bedtime approaches.. if she hasn't had a brief rest to recharge, she will have episodes of screaming and crying, and fussy periods. The late afternoon short nap, won't interfere with a 7 pm bedtime.. it will make the bedtime better and more enjoyable for both of you.
Hope this helps!
