berolina - at 6 weeks sounds like your baby was going through a "growth spurt". Mine did this around 3 weeks old and 6 weeks old and again around 3 months old - he would be on and off the breast all day, sometimes just for a quick "snack". This would last about 2 - 4 days and then he would go back to feeding less frequently.
I have a DS now just over a year old - still breastfeeds 4 - 6 a day, sometimes it's for a quick snack or purely for comfort. He loves it before his 2 naps during the day and last thing at night beacuse it sooths him and usually sends him to the land of nod !
Reading this thread reminds of the very difficult early months though, lots of breastfeeding sometimes all day and all night, DH saving my sanity by taking DS and sleeping with DS on his chest while I had a few hours of sleep on my own, etc...
I am a firm believer in sleep (DH and I are what I would call clinicial insominacs, so believe me having a tiny baby to look after has been the most difficult thing either of us has ever done).
Experince tells me that scheduled feeds for a baby that small are undesireble and will in many cases undermine breastfeeding. Gina Ford, et al are not breastfeeding advisers - I have read her book cover to cover when I was pregnant (petrified I would have a 24-hour crying baby so thought I should read some "bestselling books" like hers - what a mistake !!) and ditched it the minute I had my beautiful boy.
I do not think that schedules work for a breastfeeding baby (i.e GF suggests 3 hour feedings ? - so do you leave a baby who is hungry after an hour as is often the case to cry and cry before the next feed ??), because they sometimes like to nibble and comfort suck.
Mine did it then and he does it now. When he falls (he is learning to walk) or is upset, NOTHING will sooth him the way mummy's breast does ! i.e. breasts are NOT just for feeding. It seems to be very much part of a baby's psychological makeup to want to suck for comfort and he would rather do this at the breast than on a dummy or bottle.
I am not a hippy chick "earthmother" sort (quite the opposite I am well-known for being a hard-nosed lawyer), but my baby has taught me everything I know about breastfeeding, and that is go with his cues and trust his instinct and your own body.
The good news is that babies do find their own feeding and sleeping schedules without ever needing any kind of training or reading a single "best-selling" book !!