Happy to report that after a looooong day with very few naps, last night was much better. Seems he got back on his routine of 8pm bed, feeding at 2-ish and 5-ish, up at 7-ish. Whew!
On another note, I think part of the problem on Sunday night was that he's outgrown his 0-6 mo pacifiers. I had noticed last week that sometimes I'd take the binky out and he'd have a bit of a pressure imprint on his face from it. That should have told me that he's sucking really hard to keep it in his mouth because it's too short for him now. Got him some 6mo+ ones yesterday and he took right to them. This kid's got a big mouth apparently! LOL