Hey, buddy! 👋
It looks like the start of a general deficiency; you need to feed your girl like an adult now, she's grown up and wants to eat well. It's the plant's hunger, a lack of necessary nutrients! Increase the dosage of your fertilizers in the watering, bro! 👆
I also recommend watering with a solution at a pH of 6.3 👆
Good luck, friend! ✊😇