First grow

I learnt from another grower, to introduce bloom nutes 1 week after you flip the lights, but there's also many disagree as the bloom nutrients will trigger flowering. I've ran both method and I found for my setup, switch to bloom after flowering pistil shows works well as they stretch and the nitrogen in veg nute helps with recovery from defoliation before flip.

The 5th picture is better ?

If your light is only 7 inches away it's too close. That's light burn

She isnt showing flowers yet so i wouldn't change the light nor would i introduce the bloom nutrients just yet. I noticed however your plants are showing some signs of issues, check your runoff ph to see if its all good or if there are any ph issues. If there are none you should consider lowering the dose of fishmix. Stay lit growmie.