My son is only 7.5 months old and I just came back with him from Taiwan. This time, he fell asleep during take off and landing and didn't wake up even when the plane land. Last time (when he was 4months old), during both take off and landing, I only let him suck on '奶咀' and drink milk and he was also Ok. My doctor said baby can more easily adopt to the pressure than adult lor ?-(