BBT question

Renee • Married 11/9/14...BFP 6/28/15...DD 2/25/16, BFP 3/29/2019, MC 4/12/19 👼🏻, BFP 🌈 6/12/19, DD 2/4/2020
So I woke up at 430 and checked my bbt because I didn't think I would be able to check it around the normal time of 630 and it was 97.31, I ended up waking up at 6, rechecked it and it was 96.61/96.91 can't remember lol but which one should I use? The one from 430a or 6a? Went to bed at 10p of sleep duration is needed...thanks in advance!