New to BBT more sleep or same time?

Jessie
I took my BBT yesterday at 5:30. My Husband said he would wake me up when he gets up for work to take it but he didn't realize that meant it had to be the same time each day lol. Today he had to get up early so he took my temp at 4:30 and it was lower than yesterday's. I had him call me at 5:30 to retake and I did but I feel like I was kind of restless in that hour between. The temp he took was 96.93 and the one at 5:30 was 97.33..... My temp yesterday was 97.18. Which would you say is more accurate? Same time each day or after longer more rested sleep?.... Ps. I didn't get up at all in between these times. I went right back to sleep but I didn't toss all night long...... Any advice is greatly appreciated! Thanks ladies!