Wrong answer in Interview Waiver Questionnaire

Hi,
I was trying to book slot for my H-1B stamping and I answered wrong for following question in the initial questionnaire.

Q) APPLICANT was previously issued a non-immigrant visa in any category other than a visitor (B) visa.
A) Answered No - should be yes as I was issued F1 visa before.

I didn’t realized it and asked me to book appointment for Visa interview.

What should I do? Do I need to cancel my appointment as I already booked it?

Can someone please guide me what I need to do.