Hi, my DD is 3 1/2 months old and she doesn't stay up long for her A. She is tired by the time she's up 45 min or sometimes even earlier than that. So, I put her down and she does 1 hour to 1 1/2 and then wakes up. She is on a 3 EASY. Sometimes she wakes up 30 to 1 hour before her next feeding. And, if I pick her up from her crib and let her stay up then, she gets overtired the next go round and the same thing happens over and over again. Sometimes she wakes up at the 45 minute mark and I do the sh/pat/rub and than I get another hour but very fitful. I have noticed in the last few days that she stays in her crib awake but grumbles quite a bit. She does not cry but just makes grumbling noises. I don't go in her room for this unless she cries. Is that okay?
Should I be switching her to a 4 EASY because it seems like her naps are getting shorter. Also, with her getting so tired quickly with her A time, how do adjust for that? Do I train to keep her up for 1.3 hours before S?
What is the typical A time for infants at this stage?