That sounds good, Jane. You might also be thinking about some alternatives when you get a lower than expected preshot. Skipping is the least desirable choice as you lose momentum. Giving a tiny snack and then waiting without feeding for a hour is an option - if he is rising and nearer 180-200, then shoot a little smaller dose. Feed part of the meal and retest in 2 hours. If he is high enough, give maybe half the dose. Plan to give him an extra hour at the end of the cycle and see if he is nearer his usual preshot number and safe to shoot.
The one good thing about skipping is that you can shoot earlier the next preshot as he had no insulin the cycle before. So you can possibly catch the number before it goes high (er)
All those options mess up your schedule in some way, but they are the options that make ProZinc adaptable. They may be options that you only want to consider if you will be there to monitor the next cycle, but they are possible tools for your PZI toolbox.