One of the excellent things about this forum is it allows you to come here with ongoing issues and seek guidance before you take action. I would recommend actively seeking advice here before you plan to do anything if you are concerned.
Even something as seemingly minor as that email your XW sent and you responded to. I think its better to come and get advice beforehand, than to come after and say this is what happened and this is what I did, especially when things are early and you're getting the hang of DB.
"What is best for my kids is best for me" Amor Fati Link to quotes: https://www.divorcebusting.com/forums/ubbthreads.php?ubb=showflat&Number=2879712