The best way to validate an idea is to go sell it. Basically in alignment with what Tom said, set up conversations and see if that is what they want. Look at this as research above and beyond everything. Have as many calls as you can to get a better idea of what people really want.
I've done a lot of work in sales around creating opportunities to get people on the phone and have real conversations. Happy to help you do the same. I know it can be scary!