Hi there Betsto, welcome to the forum.

I suspect you already know what I am going to tell you.
You will be far more successful if you stick to the plan as written. That means only eating the foods on the allowed foods lists. And, as you should know by now, ice cream doesn't appear there at all.

Don't worry too much about it, you are only human. Just get right back on plan.

All the best to you!

Rosebud