Firstly, big to you. Oskar was pretty much the same as you've described. I spent a lot of his first probably 8 wks with him either attached to my boob or being held (except at night cos he was good with night time) during the day. He would wake like you said within 10 mins if I put him down. I just decided in the end to not fight it and to go with what he wanted and he did end up settling down into his own routine (if you can call it that...lol). Now he will have naps during the day (on his belly though) which can last for a couple of hours. He will NOT sleep on his back during the day. At night he's in his hammock and loves it. I hope it settles down for you soon. It will get better. I used to also just prop myself up with some pillows and let him fall asleep on my front in his hugabub (so he couldn't fall off me) and I'd catch a few zzz's that way.