Kindly, @mummy917 , this?
Anxiety/threat brain has this way of magnifying how awful x likely something will be, but also underestimates our ability to cope x our resources/support. It also makes us spend a lot of time worrying about a load of hypotheticals.
You have demonstrated over and over again that you are very capable and resilient, also that you do problem solve the practicals, so, really what is the worst that you fear from him? And how bad will it actually be? Short term & long term?
Glad the potty training is going so well!!