Tired to talk about plans with my boyfriend

I tried talking with Jeremy last night about plans for when our rainbow baby arrives. He really upset me and I felt he was putting me down. He just wants to go with the flow. I know things don't always go as planned, but I still want some structure for us to fall back on. We don't live together and I wanted to know if he was going to make it to the delivery, will he be staying the first couple weeks to help with our new born, ext. He has kids so to him I guess another child is no big deal. But, this is my first and I'm looking to him for guidance on what to do and for support. I just don't understand how he can be so sweet and supportive one minute then be an jerk the next minute. 💔 I don't feel he should be so quick to dismiss my feelings in having some sort of plan. I keep having nightmares of him walking away and I feel a plan might be able to help me sleep better. #superstressed