AsNoriuanswered grow question a year ago Heavy nitrogen toxicity, plus maybe you underwater them at same time.
6.3 phed water for 2 weeks when needed and no food during that time.
Less is more in growing, especially soil.
I did recently 3 plants in soil no nutes at all, still all ended in 100g a plant area.
Water with small run off, think for 11 liters pot you need to load 1.5-2 liters , it should last 3-4 days, lift pot to know when to water again, pots get light without moist, you will catch it quick.
Collect run off, dont let them stand in it.
All should go way better.
Good luck !