We know we are selling this house and moving across country in 2 1/2 to 3 years and that we will be both paying for the move and downsizing at the same time. We don't know if we will have any sort of yard or not, the size of our next home, etc.
We haven't started the radical downsizing that will be required. What we have started is not buying anything we don't absolutely need to replace something that is no longer usable and/or that we wouldn't be willing to pay to move. So I have only replaced 2 necessity items for the house this month. Our rake broke and those leaves won't rake themselves so a new rake was acquired. Also 2 specialty type of light bulbs burned out and, since we don't have them in our stash, 2 new light bulbs that were put into immediate use.
That leads me to the whole area of stockpiling. We have lots of different kinds of light bulbs among other non-food/non-toiletry things stockpiled. Nothing more is coming in in those categories until we have none left.
I do laugh about the fact that we still have houseplants left to us by the previous owners 17 years ago. They will be left for the next ones if they want them!
What have you done when you know a big lifestyle change is on the horizon but still a ways away?