Well, I'm always dealing with my husband delay. Always letting it to the last minute. And my anxiety can't deal with that so several years ago I started to pay bills, taxes and control bank account. Maybe a lot of work but now I sleep better because I know that bills and taxes are payed on time.
My dad always says if you want a thing well done, you should do it by yourself.
But if you can't, you should tell him about your fears. I think it's necessary a good comunications between us, and maybe sometimes he doesn't understand what I fear but he tries so hard not to make me feel worse.