Well since you fed him, we'd want to wait 2 hours and that would be your PMPS tonight....so tomorrow you could shoot 1 hr, 45 minutes late at AM, 1 hour 30 minutes late at PM....but it would take a few days to get back to your usual time. 4 days in total @ 30 minutes per day so you wouldn't be back on normal time until Tuesday morning
It may be best to just skip tonight and start over in the morning. Just put N.S. in the U column (for No Shot)
We usually will shoot at 150 here, but you don't really have enough data on him yet to do it quite yet....eventually you work your way down to where you'll shoot anything over 50, but only after you have a lot of data on your cat and understand how they respond to both food and insulin