yeah looks like a small toxin and depletion thing happening again, Id top her with some dr earths or similar or even try mixing charcoal into your layer mix and a smaller amount in the middle portion of your mix as well to absorb and cancel a lot of them toxin build ups and a small compost tea should work nicely imo like ripper said. tea templates
https://www.autoflower.org/threads/a-good-tea-template.39439/ ,or just a fistful of EWC an ounce of kelp and a cpl three teaspoons of 5-1-1 or similar or fishy dudes and a TBspoon of molasses and a few drops of cal mag mixed with a cup of good water mixed with a gallon of 24-36 HR brewed tea. thats about what Id start with from seeing your wee one man.