Retested @ +2.25, still at 48. Fed another tsp of HC along with about a Tbsp of his regular LC.
Up to 56 @ 2.5 - whew! Fed his regular meal of LC.
No symptoms, he's eating well and activity level is normal. This micro-dosing is nerve-wracking - just as it seems like his numbers are creeping up and we fatten the dose, he decides to skydive! We'll try to give an "exact" .25u this evening and see how he does; if he crashes again, we'll try for a skinny .25.
ETA: update @ +3 - 58. We're on the upswing now, I'll test again at +4, but I think we'll be okay. Benny tends to nadir early in his cycle, so I'd be very surprised to see him drop again before PMPS.