7weeks - Is this normal???

[dueinfeb]

Our bub is 7weeks old...he sleeps in his own cot in his own room. Once he gets to sleep he has no problems staying asleep. He's able to settle himself when he wakes mid sleep quite happily. The thing we seem to be having happen is that the only way he initially gets to sleep is to be nursed/ walked etc. He's happy to go to sleep himself in his pram, bouncy thing, car seat etc, but can't seem to settle himself in his cot. Is this normal for 7weeks old. I kind of think that he's still very little and don't have a problem nursing him although dh is starting to think we should be able to start putting him in his cot to settle. When we've let him cry (going and patting and checking etc every 5 mins) he seems to just wind himself up even more until he's at the point where the only way we'll get him to sleep is to feed him and start over. (The main time we have this problem is early evening - at night when I get up to feed he goes straight back to sleep no worries and day times don't seem to be as bad, but still needs help to sleep in his cot)
Would love to hear your opinions / experiences ??