Embrace the questions
It's one of the Improv RULES: don't ask questions. What we don't hear often enough is that those questions are coming from the right place. That moment of not knowing isn't wrong!
When you have a question, then you have noticed a lack of information! Fantastic! Yes! Great job! The next step is to do the creative work. It's time to courageously make up an answer and gift it to your partner.
Instead of "don't ask questions" maybe we can try a new RULE: answer your questions. In that moment when you're about to ask a question, embrace it and answer it yourself.