I'm happy to hear that, now you have to help him get through that 40 min. jolt, whether you use pu/pd or shush pat. It took me about a week to get her to get through that jolt by giving her pacifier (because she loves to suck-that's her touchy side :-) ) and putting my hand on her chest so she feels my presence. It was trial and error to figure out what worked for her. Shush pat didn't work too well with her. I also tried rubbing lightly between her eyebrows, rubbing her tummy, and rubbing her legs. What works now with her is making sure she has her pacifier in at the 30 min. mark when she starts coming out of deep sleep. She's getting better at holding it throughout her nap so I don't really have to replug it much, just on rare occasions. Don't feed him until he is due to eat according to your routine. So if you put him down to nap and he wakes up, work with him to get him back to sleep until his next feed. After that 40 minute that he wakes up, you have about 10-15 mins. before his alertness cycle begins. So let's say that you can't get him back to sleep, make sure you feed him a bit before his alertness time ends, change his diaper and put him back to bed, because you don't want him to eat and sleep right away, even if that means that your routine changes to 3.5 hours from the time he ate. It'll take some time, but hang in there, it really helped me a lot. Let me know how it goes.