When merging families focus on helping each member of your newly formed family feel connected and respected.
Create a sense of belonging by having special space for each child. Even if you can’t give each child their own room, do what you can to provide a dedicated place for personal items so when kids are with you they know where to find their stuff. Also set up house rules about respecting everyone things.
For example, when Jeremy is at Mom’s house it shouldn’t be okay for his step/bonus siblings to use his Nintendo DS at Dad’s house without his permission.
Send a clear message that regardless of how much time is spent under your roof, every member of your blended family is valued.