I am slowly working to disentangle my life from my son's because he is estranged from me and won't speak to me.
First I switched my backup person in case my email has an alert (signed in from a new device etc) to my brother.
Today I left him a note to please have his auto insurance premiums deducted from his own bank account not mine. He has reimbursed me for these, but sometimes with a lag, not an issue I mind as I can float him, but I don't think he should be doing this where he doesn't want to communicate with me.
This is emotional work for me, and makes me think of other people having to go through it due to divorce, death or dementia of a loved one, etc. I feel for you all.