I tend to bury myself in making mementos from previous trips. I love scrapbooking and crafts and so does DD so we fill our time either by doing something with the memories of the last trip or planning and making things for the next one. We sat this year out and although it's not 2 full years between visits for us because we are going earlier than usual next year, it still feels like something is amiss not having been. It's also the first time since 2007 that we have not had a trip booked for more than a month or so after returning from a visit so that felt strange.
That said, once the initial blues of the return have settled, life tends to resume to normal, throwing plenty distractions along the way.
Keep busy, keep yourself informed so you are up to date and armed with all the info you need when you are ready to plan the next one. That's fairly easy at the moment with all the changes happening right now