Good rule of thumb with ChatGPT: you can’t exit loops. Once you’ve gone A > B > A, your best move is to start a new chat. Even then it may reproduce and you should do some similar but different task. Remember that it’s a prediction engine, weighing heavily on the existing prompt. So you say B again, or B1 and it’s like, I know what to do! A! Cause last time was A->B so let’s do it again.

In your case this would be “[]Task1”, “Task1 is done”, “[]Task1”, [here is where you start a new chat or fix it yourself if possible].