my 5 week old does the same thing. during the day he is awake more, but that is due to the fact that he can see things more and is really nosey. he has his bottle and brings up wind ok, but when it comes to going to sleep, he's a real fighter. it usually takes me 30mins to an hour sometimes to settle him, i have found that putting him in his pram and rocking works sometimes, but if all else fails we take him for a ride in the car..puts him to sleep in no time.
thomas only sleeps on his tummy though, he hates sleeping on his back and only on the odd occasion does he sleep on his side. my midwife has told me off many times for sleeping him on his tummy, but he is really strong and could hold his own head up right after birth, plus if it is the only way he will sleep, i will do it.
i find that putting him somewhere warm comforts him, usually after a really long bath he sleeps for 5-6 hours sometimes, but i can't do that all the time because he has to have plaster casts on his feet every week, so i do this once a week.
but also he can sense when im getting frustrated cos he's not sleeping and this makes it worse, so i put him down for a minute or two, pull myself together and try again, or i give him to someone else to settle, he loves his nana settling him, so she does most the time.
sarah (20), damian (20), thomas (5wks) Auckland NZ