Why Did I Miss First Two DLs, But Hit Third? Same Setup

Hello. Do you see any reason why I missed the first two DLs but hit the third? I think my form was essentially the same.

For background, this DL was the “1+” in the 5/3/1 cycle in my 2nd week. Also, immediately prior to doing the DLs, I did the 5 cycle on squats (started the third week) because I will be traveling and cannot train (I know I am a little off on the 5/3/1). On the squats, I got 10 on the “5+”.

Any thoughts would be appreciated. Maybe not enough rest, but why did I hit it on the third try? Did I not grind it out enough on the first two? Thanks.