Gonna check your ss- just a sec...
I wouldn't do 2u. You don't have enough data to support it yet. The last time you had this low of a ps you were still feeding the d/m, so you can't compare that. I'd maybe go with between 1.25-1.5u. I try to be cautious with my doses, so I'd probably do 1.25 if it were my kitty (you're using u-100 syringes, right?) just to be on the safer side.