One great manager I worked for taught me to appreciate the time spend / wasted by our suppliers so what I effectively was thought was:

Send a (light on volume) RFI to the top 10 Pick out minimal 3, maximum 5 and send them a RFP Pick out minimal 2, maximum 3 for a RFQ

Every round all the suppliers had a change to ask questions that would be anonymized and answered to all.

This way we would protect and honour the resources of all parties involved.

Decent write up about RFI RFP RFQ:

https://www.cobalt.net/rfi-rfq-rfp-whats-the-difference/