Hi S.!
My son Andrew (now 16 months) does/did the same thing. There are PLENTY of opinions about what one should and should not do. When he was younger, I told my ped that it sounds like he's going to make himself throw up. ped said, 'so let him throw up, he'll learn soon enough'. ok, so who's gonna change the sheets at the end of what is usually a pretty long day? "Healthy Sleep Habits Happy Child" book says to let it go for 15 minutes, but by then he's so fully involved and hysterical that there's clearly no turning back or "self soothing" going on. Husband thinks I'm gonna make a momma's boy out of him.
So....being a girl that has had good results when I follow my gut, I do what I think is necessary at the time. I listen to the monitor, and if it sounds like he's just rolling over, or if he might be settling down, I give it another minute or two. If at the end of 4 minutes he's still winding-up, I go and get him. We cuddle, and after a few yummy minutes he's fallen back to sleep in my arms and the world is a happy place again. I gently place him back in his crib, and he's ok. If he wakes himself up in the middle of the night, I just bring him into bed with us and cozy him up and we all fall back to sleep. This sort of approach has actually decreased the frequency, makes me feel better about what and how I see myself as a Mom, because part of my gig is to comfort and console, and I think it makes him feel more secure because he knows that when he cries someone will come.
So....my advice is follow your gut. I don't think any of these authors have ever really been the "go to" person when the poop hits the fan, and if I choose to do what's easiest in the middle of the night, because being sleep deprived sucks, and trying to read the chapter on 'what to do when...' takes more time and energy than I'm willing to devote to it.
There's also a part of me that knows someday there will be fewer cuddles, that he'll be more independent, but hopefully he'll always know he can come to me when he needs some comforting.
Hope this helps, Peace, Drea