Generally, you do not want to feed your cat if you are stalling. The food will raise your kitty's numbers. And no, you do not need to wait 2 hours. You need to repeat testing every 20 - 30 min to see if numbers are rising to a safe level. Remember, with Vetsulin you need to have food on board before you shoot. Information on Vetsulin is in that insulin support group (if you've not seen the sticky note).
It would also be very helpful if you could start a spreadsheet and add information to your signature. The information you will need is in this post on helping us to help you.