m0useanswered grow question 3 years ago I think you might have cooked it with an ec of 1.2
Its a seedlings and needs much much less feed then that.
and auto feed even less.
Your light also seems a bit to close at 11inch for a seedling unless its dimmed a lot.
Use this link as a feeding reference for autos,
https://www.autoflower.net/forums/threads/med-man-method-feeding-chart-ppm-ec.47856/
I would also prime a new seed if you have any left.
Best Of Luck