on mine all are feed the same and 2 are perfect and 1 is like yours and i cant seem to correct either
i was asked
how often do you water?
have you used any anti wilt? i did afew days ago and stinky was tellin me she dilutes more than recommended as it can sufficate the plant if used too much(and its easy), and might not have needed yet
i think mine needed nutes cause the yellowing leaves like yours so i added and it helped, did your nutes stop the yellowing?

i know i didnt help much but maybe if noone helps soon we can figure out or
hopefully stinky or someelse will rescue us soon