This is a major life change which will take time to process and so there aren’t any magic ways to get over it overnight, but there are ways to make it easier.

I’m not clear if you have already picked the retirement community. But if you haven’t, I would consider the moving/adjustment assistance it will provide in the decision. Some do more than others as part of the process and some provide extra pay services like down-sizing expertise and hands-on help. If already committed to a community, I would learn of and plan to use all of their relevant services.

I would ask my daughter or another trusted person to further help with investigating the available services.