BBT charting while breastfeeding?

Thea

I would like to start charting my temp to see if I'm ovulating (I have PCOS) but I'm breastfeeding every couple of hours during the night and have just a few questions 😊Am I wasting my time because I won't ever get accurate temperatures because I might not have gotten enough uninterrupted hours of sleep? Does breastfeeding affect the basal body temperature? I figured that I'd take my temp in the middle of the night when I'm nursing instead of first thing in the morning because then I'll have a baby crawling over me... And lastly: does it really have to be a double digit thermometer?

Thanks so much for reading!