bbt worth it?

ju

I've read that you need to temp at the exact same time everyday in order to be accurate. My problem is I don't have a consistent schedule. My husband works from 3pm-3 or 4am and I work day shift on the weekends. So when I don't work my schedule matches his, but when I work I sleep at night. So is tracking my bbt going to be a complete waste of time for me?