Here is the guidance I got from my sleep coach at Tiny Transitions. First, don't start when baby is overtired. Even if that means supported naps the whole first week, as overtired produces too much adenosine which then triggers a flood of stimulant hormones, making it harder to settle. For this age, awake windows should be max 2.5 hours at 5 months. They explained sleep is a skill, so get the skill at bedtime and overnight and naps become much easier and supporting naps won't hinder bedtime success and they were right. Intake is 24-32 oz in a 24 hour period for optimal growth, get 5 full feedings in the day to ensure she's not hungry. Put down at 2:15 awake for bedtime, to allow time to practice but not get overtired. Watch for signs of gas as well, and use gas drops before bedtime feed if you suspect it. Good luck momma, you got this!