Fairy Cake Auto - Mephisto Genetics

Not enough light and you shouldn't give that few Grow nutrients from the tri-part you use. In veg, plants needs nitrogen, and and it's mainly the Grow part that supplies this nutrient.

This is just a overall sign of poor health. Autoflowerz sucks doesn't know shit about autos. They are really for more experienced growers since there is no way to control the growth. Big autos come from dwc, or coco/perlite grows if you know how to maintain the coco right.

Inconsistent light schedules or environmental factors can cause the plant to start growing 3-point leaves as a stress response.