Just wondering if anyone has any tips in convincing a 6 week old that a sleep during the day longer than 20 minutes is a good idea!

The past few days we have had 2 hourly feeds (I'm presuming it's a growth spurt). During the night he settles (mostly) and goes back to sleep. During the day I give him a feed, burp and change, then offer the other breast (or the rest of the first one). This is then followed by 2 hours of cuddles, lullabys, rocking (in arms and the pram), putting him in the cot to drop off.... by which time he's hungry again and we start all over. Nothing seems to work, well except laying on my chest.

How much are babies supposed to sleep during the day?