At some level, I think we always knew this, but hadn't codified it. Last night at bedtime, Karston said, Tummy still hurting. I don't want to fall asleep. Just like that, he strung together his poor eating with his poor sleeping. I asked a few more questions, and Karston said he didn't want to fall asleep while his tummy was hurting because then he has bad dreams. I'm impressed that he figured out that connection on his own just a few weeks shy of 3.5 years old. This makes me more confident in what was previously just my intuition: fix his eating first, then see if we still need to fix his sleeping.
I just wish I knew where to start! At Cale's 9-month well-child-checkup yesterday, the pediatrician said we can try Zantac with Prevacid. She also gave us a prescription for Nexium to try next, to tide us over with ideas until Karston's specialist appointment on February 25th. Everything we've tried so far gets less and less effective over the course of one month, and it's very disheartening. He's still on Prevacid because it's holding ground to a little better than where he was before treatment; without it, he crashes to new lows.