BBT newbie. Temp seems to be dropping too early?

Hello! So I started temping this month and my temperature seems to be dropping too early. What do you think? I know I don't have a full month here but I definitely caught O! My cycles vary some and ovulation was later than usual but now I'm worried about my luteal phase length. (this graph doesnt have all my symptoms in it because I logged them with glow but like the FF chart more -- next month I'll put them all in the same place)