So my LO doesn't nurse near what this app says is the average. She never has. She gains weight and grows. She unlatches herself and seems happy, satisfied, is all grins, coos and happy kicks after but they say average is 17min. She does about 8min each time approx every 2.5 to 3 hrs during the day and 4-5 hrs at night. Should I ask her dr about this or just let it be since it seems that she's getting plenty?