Husband doesn’t want to “plan” baby #2?

Hello all, so my husband and I have been discussing having baby #2 pretty soon. We both want a second child, but he says he doesn’t want to “plan” it. I’m not on birth control, we are using the NFP method (basically we are avoiding sex during fertile window and using pull out method) and have been for a little over a year, successfully. My thinking is that there has to be some sort of planning involved because we have to decide when to stop preventing...my question to you ladies is how can we go about this very spastically and not “planned” without having an unwanted pregnancy? 😂 I don’t understand what he wants so I thought maybe I could get some ideas or opinions? I won’t use opks or any tracking stuff, but I should mention that I have endometriosis and was diagnosed after my first child so we aren’t sure how easy or hard ttc will be. I’m naturally a very controlling and planning oriented person, while he is very carefree and easy going. I got pregnant with my son the first month off birth control. We want this to be super fun and exiting!