Ask HN: Help scaling a site for Covid workers

I was approached by people who have deployed a site that connects front line Covid health care workers with free local therapists. It's being used in the SF Bay Area with talks to roll out to the entire state and beyond. I'm not affiliated at all with the effort but was approached to help push it forward in any way I might be able to. It was built quickly using Google Sites. The site displays therapist information, scheduling information. It collects no PII that I'm aware of. I think this is a great service but it's a bit out of my domain so I'm looking for help with helping them. Some questions I have is should they move off Google Sites before trying to expand use or can they stay with Google Sites for now? What are some ways I might pull together other resources to help with this? What can I do to help them move this forward? Thanks all