Welcome to the forum.
Echoing what's been said you haven't been baptised so you have nothing to DA yourself from. Only baptised JW's get to disassociate themselves.
You may well still feel some sort of connection because of your upbringing and it may be wise to stick around and debunk the JW myth, but as for you officially DA'ing yourself, you have nothing to DA yourself from as you never officially joined by getting baptised.
Paul