I was going to say that my dd had about 2 hrs of A time at 6 mos or thereafter. However, the morning A time tends to be the shortest, so if your dd is tired after 1-1.5 hrs, go ahead and put her down then. If she has a good 1st nap, then she might be able to stay awake longer for the next A time and then have another good nap. Even if she is still tired after another 1-1.5 hrs of A time, go ahead and let her nap then and the catnap if she needs it. She'll let you know when she's ready for a change. Some babies need more sleep than others. There really is no "normal" when it comes to babies. By the way, are you including the time it takes her to feed in her A time?