My almost 4 month old has been gradually spacing out feedings and I am having a hard time figuring out the end of the day routine. Typically she eats somewhere between 5:30-6:30 and again one more time before going down for the evening. She used to nap between these two feedings but recently has begun to fight this last nap. Is it time to abandon it and keep her awake until she eats again around 7:30/8:30? Her typical wake time is 90 minutes during the day.