How much sleep..

Annike
How much sleep do your 7/8 month olds get? 
Several sources say that by this age babies should get an average of 11 hours of uninterrupted sleep at night  plus about 3.5 hours during the day, divided in 2/3 naps. 
With our 2- maximum 3-hour stretches of sleep at night I feel we are soooo far away from this!