Thank you, ladies!
To answer some of your questions, yes he is being medicated for reflux, but it isn't perfect. Today, for example, was a pretty tough reflux day despite the meds. It's not that I think he needs a different med, because he is a thousand times improved with this one, but sometimes he just has bad days.
I have never had much luck elevating the crib mattress. Like I said, DS1 had awful reflux, which couldn't even be helped with even the strongest meds, so we tried the mattress back then. Today however I did put DS3 in on his side and he was more tolerant of that. He even slept a little, but not much. He really hates to be anything but carried around, which is starting to kill my back.
I have to confess I don't know what APOP is. I've been out of the BW loop for a few years now!
As for the BT routine, my boys are awfully rowdy to be included in any kind of storytelling or BT involvement right now. They try, but things always escalate into a competition between them for funniest, loudest, or silliest. The whole point tends to escape them after a few minutes. I suppose I could bump up their routine and let them read quietly until I finish with DS3, but I'd probably end up feeling rushed with everyone. I think the best thing is the reminder that DS3 is still young and I have time to work all this through.
Thank you, thank you for your responses! Any little bit of advice helps!