Why is my temp dropping so soon?

On 9dpo my dip temp to 97.25 is not reliable. I slept terrible and had took it after only 2 hours of sleep (I didn’t check the clock so I thought it was later). I did take it again later that morning after a couple more hours and it was 97.95 but I was very restless before that temp so I don’t think it’s right either. So right now I have logged the first one, if I had logged the second it would be dropping multiple days now. This morning it was 97.88. So that one temp is throwing me off but over all I’m a little concerned of these drops this early