Hi B.! Congrats to you on making it through the day! haha The first thing I thought of when I read your post was, "Is your son's room put together in the new house?" What about a special peaceful place the two of you had in your old house? Is that area "recreated" in the new house? My son was 2 when we moved a few years ago. We were building, so we were in a temporary situation in a teeny tiny house. We put most of our things in storage, but there were some things that we kept out that made everything familiar to him. We put everything from his room in the temp. house, the recliner we cuddled in, things like that. He adjusted very very easily.
Your son's world is totally upside down right now, so anything familiar to his usual routine, familiar smells, no matter how small it may seem to you will help. At 1 year, babies still thrive on routine and familiarity. If at all possible, even try arranging his room, the living room, etc. as much like the old house as you can for now until he gets used to his new home. Hope this gives you some ideas!
-E.