What are must follow boundaries and other rules I should set after breaking up but live together?

My ex gf and I recently broke up last Friday. We have been living together since September and have intertwined in our living since then. Because she is moving out of state, she stated until at least mid April to move out so she can prepare and be set. So that leaves us with about 8 weeks. What boundaries must be set for both us that you guys think we should follow. I don’t want things to be miserable and detrimental to healthy healing or we won’t make it to that time. I just want things to be friendly and cool to one another as new roommates. She mentioned she wants to do certain things still and what not. Any advice or suggestions about boundaries or best course of action?