Do you think I exercise too much or is it just enough?

I am 16, 5'6 and 115 lbs. I don't know.Monday to Saturday I do cardio and aerobics for like an hour a day and it's like 8pm in the evening. And when there's no classes, I do like 2 hours, 1 hour in the afternoon then evening. Then Sunday is my rest day but this time, I go like everywhere to the mall where I walk for like 2 hours then go do rhythmic gymnastics with all the stretching, throwing, and dancing. Every saturday and sunday I do gymnastics then sometimes I do it in school when it's our break time. I eat like 1200- 1500 cals a day. What do you think? Is it enough or too much?
I'm a girl and a student. I'm not trying to lose weight. gymnastics is my sport but i'm trying to tone my stomach and body with cardio.
 
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