It could be anything. It could be anorexic, or bulimic, or just underweight.
Between 6-8 months is generally when most toddlers sit up on their own
You can write up a petition or raise money for the school. If you raise enough money then it can put the P.E class back on track. Without Physical Education your classmates will gain weight and not know how to eat and live healthily.
Continue to have check ups just because you are treated doesn’t mean it’s gone fully and can’t come back.
