Sorry to hear that you are so worried about your DH going first. You sound a little depressed to me, not saying go down the antidepressant path, is there anyone you could talk to near by? Gp perhaps?
Back in the day I hoped my dad would go first, only because mum ran the house, bills, shopping, book holidays, she would give him pocket money each week & he was happy with that.
He just wouldn’t have had a clue, it would have all fallen on me to sort his life out, not that I would have minded, tbh.
Now mum is on her own, she’s sad but doing ok, she has me & her granddaughter who is wonderful with her.
Now it’s my turn to worry! I want to go before my husband & worry I won’t cope with life after he’s gone. I have no children to fall back on (that does sound rather selfish I know). I did go to my GP in the end & prescribed 10 mg of fluoxetine, with has helped. So I totally know where you are coming from.
Hope you will both go together when the time comes.