Hello in_transit,
Welcome to the forum and congratulations on having the courage to ask for help - it's often the most difficult, first step!
I don't fit the category of "senior ex-BK" you're looking for but I know that there are quite a few here who are very willing and able to engage with ex-BK's in a helpful way. Mostly this happens "on forum" but we all respect each other's standpoints, so I am sure that you'll soon get offers to share and talk via so-called private messaging, which might later evolve to personal e-mail contact.
All at a pace and in a way which suits you. Through this process, you'll soon decide for yourself who can help you the most (and who you can help) ...
Very best wishes to you,