Taking your BBT to begin tracking ovulation while nursing

Hey all - so I have a six week old and want to give my body a break from BC. My husband and I don’t want to conceive again until closer the the end of next year and I’m currently nursing. I know nursing is in no way a fool proof method of birth control, so I was going to start tracking my bbt again to see if I can figure out when I start ovulating again and obviously avoid having sex at those times. My question is - has anyone done this and/or have any thoughts info on tracking your bbt while nursing. Does it work? Does nursing alter your temps? Thx so much for reading and any thoughts/feedback you can provide!