A decent sized balcony can be as useful and pleasant as a garden.
in recent years I’ve downsized to a small house by myself, moved again to a smaller one with a partner, put in an offer on an apartment which we would have moved to if it hadn’t fallen through and now ended up in a four bedroom. So I think I have some experience!
Before you even put the house on the market, see how much you can throw away. If either of you find it difficult to pare down then think again.
I had no trouble in fitting into my first little house. I got rid of almost everything and just bought what was necessary. No problem. I don’t feel any need for past stuff.
But it became apparent that my erstwhile partner couldn’t dispose of anything of his. In the two bedroom house we shared the second bedroom was solely his and packed to the gunnels. The living space was cramped with furniture he wanted to keep even though it was way too big. And he had to rent a storage unit for the stuff we couldn’t pack into the house. Hence the upsize to four bedrooms ?
But enough about me. It makes get not be a problem for you, but I do advise testing it out!