I guess this is considered a NW, feel free to move if it is not.
My 3.5 mo old has been on EASY since birth and independently sleeping since 10 weeks. For the past 2 weeks she has started waking up almost an hour (to the tee) after going to bed for the night. She cries but not too heavily which lasts anywhere from 5-10 minutes. I used to go up there and try to shush/pat but this seemed to OS and instead have just let her cry---it has NEVER become a 'I need you cry' and if so I would intervene. However the fact that she wakes up crying at all bothers me and I'm hoping to get some help eliminating this. Sometimes (1-2/week) she will wake up again 2 hours from this and will truly cry. I go to her then, do not feed and settle to sleep. I notice that the later wakening occurs especially if she did not nap great during the day, but the 1 hour after bed waking occurs pretty much nightly. Here is our routine. She is exclusively BF. We went to a 4 hr EASY about a week ago.
Wake somewhere around 4-5 (feed) back to sleep.
Wake 7A
E/A 7-8:45
S: 8:45-10:30 (sometimes 11)
E/A: 11-12:50
S: 12:50-2:30
A: 2:30-3
E/A: 3-4:30
S: 4:30-5:15
E: 5:15
A: 5:30-6:30
E: 6:30
A: book until bed
S: 7:15
Awake 8:15 cries/fusses 5-10 minutes; sometimes wakes 10:15.
I have been doing a type of 'cluster feed starting at 5:30 since she does not do a DF. I have done this since birth as the DF was too OS. My baby is a textbook baby though.