Nesting is totally real! *throws tomato at Millipede*
When I was first pregnant with my first I totally went into nesting mode - and it was not about spending, it was about creating a special space and "preparing." I could not believe what I was doing, nor could I stop it.
Pack up the clothes and stuff and put them in mailing envelopes. When you move, mail them to yourself, like parcel post so it takes forever, and then you'll get them in the mail and say, "Oh, look what cousin Emma sent me, her old maternity outfits."