BBT info please

Erin • Tue, Sep 24 • Trying for first baby❤

Everything I read says you need to take your temp at the same time everyday and have at least 4 hours straight sleep. I am a terrible sleeper, awake 3-4 times a night and if I do get 4 consecutive hours of sleep its at different times each night. Been like this since college😞 So my questions is, Just use opk and cm for indications of ovulation??