Hi, not all babies feed to sleep. A lot actually get a bit of an energy hit from feeding and need some activity like kicking on a mat before they go off to sleep. My advice is from the Baby Whisperer, and it really worked superbly for us. Try to follow a pattern of Eat, Activity, Sleep, Your time (E.A.S.Y) and put him down awake but drowsy (i.e. showing tired signs) as much as you can. At eight weeks, I would follow a rough pattern of 20 mins feeding, 30 mins activities, 10 minutes preparing for bed (nappy, swaddle, close curtains) and then 45 mins - 2 hours sleep. Over time these times will extend so that your baby goes between 3 and 4 hours for a feed. Recommend Baby Whisperer if you're looking to create good eating/sleeping patterns.
With baby no.1 I worried and spent way too much time trying to get him to sleep. With baby no.2 I just get on with life and she falls asleep as and when she feels like it. I don't think at that age that you can rely on a particular method. Sometimes she fed to sleep, sometimes that woke her up, sometimes she fell asleep while I rubbed her feet, sometimes she fell asleep while I was reading bedtime stories to DS. Now she mainly falls asleep in a sling. Their 'routines' change so quickly that it's hard to keep track of them and impossible to impose a routine on them.