So sorry. Likewise, I'm a widower as well as an orphan and have experienced many losses in my life.
The transition from being half of a couple just one of you has more than a few large steps.
This brings up a suggestion that SW should consider adding a few Widow and Widower groups/forums. There are dozens of such groups on Facebook, some of which are pretty big. The subject is complicated enough that one size doesn't fit all.
FWIW, I've participated in a few support groups over the years, Compassionate Friends, and a Hospice provided service; and they were both helpful with moving forward and finding an accommodation with the loss.