The best thing you can do before moving is ditch a lot of "stuff". Much of it you won't need or want to use with your new place anyway. Not sense moving it and then tossing it. It almost feels liberating to move into a new place with room for everything. Of course, some of that stuff will need to be replaced in the new digs.
+1000
One year ago we sold and moved out of the large suburban empty nest (25 years in residence) and moved to a smaller place less than half the size.
For six months pre-move we ditched stuff via every method possible -- thrift store, gift to our kids and friends kids, $0 listings on Craigslist and FBM. It was amazing how much stuff was off loaded.
But after all that, we still ended up pitching stuff into a huge dumpster in our driveway. Plenty of that stuff was in fine shape (e.g. five dozen perfectly good neck ties) but had to be tossed because we couldn't get rid of it any other way.
We STILL ended up moving way too much stuff. But the experience has motivated me to continue to ruthlessly cull what remains.
Marie Kondo rules!!