[twunde]

Something popular in my area, especially in the somatics community, are grief ceremonies ala https://www.earthdance.net/event/grieving-ourselves-whole-ex... although there are several variations. If that feels too new age-y or its not offered near where you live, it may be worth looking for grief groups/bereavement support, either through your preferred religious institution or through the local medical community (they're often supported by your local hospital)