It's impossible to give a credible and useful answer to your question, based on how this has been framed. The decision to pivot is a fundamental leadership decision that can only be made based on the very specific information you have been presented unique to your team and market opportunity.

I'd be happy to talk to you in a call to understand what has happened to date to help provide some clarity into your decision-making process but I'd be highly skeptical of any generalized advice you get to this question.