Hey buddy! Give her only water during one week, and when you give her water, let it flow till the water clear.
Autos don’t need to be feed till the week before chopp, you can stop two or three weeks before.
Your trichomes looks milky that’s good, but yeah, your buds don’t look ready.
Flush it during one week and there’s a lot of chances you see your buds become bigger.
In this case, repeat this operation one more week