Like others have said, it is healthy to grieve. In some cultures there is a specific amount of time where everyone understands the bereaved won't be doing much

Like others have said, it is healthy to grieve. In some cultures there is a specific amount of time where everyone understands the bereaved won't be doing much other than honoring the dead by paring away all distractions and just existing. That sounds difficult as a US-ian raised on distractions, but I gave it a try several years ago when my dog died. Ended up sharing a good cry with an older lonely neighbor who was also closely bonded with their aging dog, and later I was there for them after their dog passed on- thanks to embracing grief and vulnerability we were less alone in our suffering, but not wallowing either; it felt healthy. It took me many months before the waves of sadness and loss subsided, and a year or two to where the dominant memories are joy, love, adventure. All that to say- especially given your fortune, I wouldn't be concerned with what's next at the expense of what's now.