Hi Tammy,
We recently learned that Advarra is offering research nurse support to sites, https://www.advarra.com/professional-services/ You could reach out to Megan Hausler for additional information.
From a sponsor-side, I've been attempting to incorporate more outpatient home research nurse visits into our oncology trials to reduce site burden. I've worked with Illingworth https://illingworthresearch.com/ and heard that Firma Clinical Research may also provide support.
Good luck and let us know if you find support!