I am only 4'11". the system suggested 1200 diet seems too much maybe ?

quitluv

hm.... Hello everyone ~
I am short, female, 45 years old (which means metabolism low).
I do exercise, cardio dance and minor weight lifting, 5 times/week. around 1 hr each time.
The system suggest 1200 cal diet per day.
Wondering if it is be too much to reach weight loss goal ?
any thought ? thx.
Good look everyone ~