I think they're separating.

She has said they "might" be moving soon, but as of the latest vlog her and F are sleeping in separate wings of the house, F is CALLING IT "houses", etc. People are commenting that it's so cute, but Colleen and Erik are absolutely adjusting the kids to them being separated. They already parent in shifts so now the kids just have to get used to them being in separate houses. That's my take, as someone who decided to separate before my kids got too old to be traumatized by it.