Hi there,
STTN at 11 weeks - that's great!!!
For naps - if your lo resettles pretty quickly, my guess is this is mantra cry. Here's a link to the info about mantra cry in the FAQ on this board:
What’s a mantra cry?I recently posted to see how long it is appropriate to let a lo resettle as well - mine goes back and forth between eyes open and content to a bit of hollering - but it's not really crying, so I let her go a bit and she often resettles - if it escalates into a cry, or if I've misheard her cry, I go in right away. Sometimes even if it is mantra, but it seems to be going on and on, I go in to do a little shh-ing or light pressure or pop in a paci which seems to get her back on track to settling back into sleep, although I know in her books, Tracy recommends not going in if it is mantra cry.
I guess it depends on your lo and what you are comfortable with, and perhaps age as well - I feel that dd2 (5weeks) is so young that she is still learning and still needs some help at times. I always wait and see if it's surely not a pain/hunger cry right off the bat, but you know your lo best. TBH, I know mantra more by the intensity and the duration than the tone. At first sound, I often don't know which it is and always cross my fingers (if it's mid-nap) but within a few moments I can usually tell. Also, it seems that when it occurs at the same time in a nap, it's often mantra as they wake and resettle at the same points - often :30 or :40 here.
Hope this helps and saves you some time bent over the crib! Happy napping (or paper writing)!