when i first went swimming with my babe i was told they natural hold their breath up to 6 months when you dunk them under, now my babes 5 and a half months im getting nervouse about doing it incase he takes on a load of water. weve been blowing bubbles for him and just putting his lips under but whats the next stage? i cant get along to baby swimming classes as i dont have the car the day their on.