After death grief help, any suggestions?

Your church may offer a "Grief Share" program virtually. This is a weekly attended program that lasts 13 weeks. Funeral homes also may offer some grief support programs. Contact those that provided your parents services. If none are available because of COVID, check with your local library. Some are offering curbside book pickup. Some books worth considering are "The Essential Guide to Grief and Grieving", "How to go on Living When Someone You Love Dies", and "When Grief Comes". There are many more.

Follow up with the hospice companies.

That is part of their services and they need to be held up to what they promised.

I am so sorry for your loss. One is difficult enough to bear, I can't imagine how difficult two is for you and your family. May God guide you to the resources that will help you deal with this loss. May HE give you strength and grieving mercies during this difficult time.

There's a really good book called "Healing After Loss," by Martha Hickman. It's a year's worth of readings -- one each day -- and you start any time in the course of the year.

A friend of my parents lost his wife in a car accident, and he found the book so helpful he bought a case of them for their church to give to families when they lose a loved one. I bought several copies over the years for friends and family, and they, too, found it helpful because it's just one page a day to digest rather than long chapters.

I'm so sorry for your loss -- I can't imagine losing two parents so close together.

Most of the Bereavement Support Groups I would have been moved to "virtual"
Contact the Hospice, both of them. Ask about Support Groups. The facilitator should be able to send the supplies and materials then they hold the group via computer.
Your husband should also be able to attend these groups.
I would contact Hospice again and ask what the status is about the groups.
It might be possible that since the groups are virtual they are not as many as previously and they may not have one scheduled yet OR and more likely there are more people wanting to attend a group and they are limiting the number of people per group even though it is virtual.

I'm so sorry to learn of two losses, so close together.   

Have you contacted hospitals?   Sometimes the big chain hospitals sponsor various groups, which may or may not have turned to online during the pandemic.

Check out these Google hits for "Grief support groups, Fairfax,VA":   Or google that topic yourself; I got a lot of hits.

https://www.google.com/search?source=hp&ei=xEBmX__hEtrLtQbrlp6IDw&q=Grief+suport+groups%2C+Fairfax%2C+VA&oq=Grief+suport+groups%2C+Fairfax%2C+VA&gs_lcp=CgZwc3ktYWIQAzIGCAAQFhAeMgYIABAWEB46CAgAELEDEIMBOgUIABCxAzoCCAA6BAgAEAo6BAgAEA1QowhYsjpg9TxoAHAAeACAAa8BiAHmFpIBBDI2LjaYAQCgAQGqAQdnd3Mtd2l6&sclient=psy-ab&ved=0ahUKEwj_042O4PXrAhXaZc0KHWuLB_EQ4dUDCAw&uact=5#spf=1600536780575

Some funeral homes also know of and can recommend grief support groups.