Menstrual cup users

I bought a menstrual cup a few months ago. It works great and I love it but, I have a hard time boiling at the end of periods. I usually wait until like a week or a few days before my next period to boil it. And sometimes not very rarely I boil during my period. I don't have a wash for it so I'm stuck with water during my period. Not always but I sometimes do use hand soap if I feel it's needed. When I do boil it I make sure the pot is fully clean, and I personally use a whisk to boil it, that's fully clean, and my hands are fully clean a little but past the wrist. I boil it for about 7 minutes each time.

Basically I'm asking you all tips on how to remember to boil it and keep it fully clean on my period?