It sounds like you are starting to make plans yourself, well done for thinking of what coping strategies you can put in place

I have only recently got a debit card, but it is one I have to put money on to use, separate from my main bank account. I am yet to use it, honestly I am a little scared I may be sucked into online shopping if I happen to go up. But I havent been up in so long that its probably no longer going to be an issue for me. I have a limit on the amount of money I can take out per day, and I deal with cash much more than card. That way I can physically see where my money is going.

All of my bills are now direct debited, I do have to make sure its all coming out right. (Come to think of it I should check my car insurance).

With this system I have never been in debt but have blown a heap of money during hypomania, and that is mostly from using my card. So I know now for next time to hand my card over to a person I trust and give myself a cash allowance every week.