Hi Rhi,

Yes the swing does work ... it isn't the fixit all but it works. I can get 15 mins or so without him in my arms. Sometimes if I get the timing right, he has fallen asleep on it -- once for 2 hours. I feel terrible when I plonk him in it, but hey, if it works, it works and I can't carry all day!
Now that he is close to 9 weeks too, I have got him sort of sleeping in the day. In the morning he is so tired that I can usually get him to sleep for 45 mins. Same in the afternoon although right now for example, he woke after 45 and I have just resettled him down. I have heard that 45 mins is a sleep cycle. It doesn't seem to matter if I wrap his arms in or out or any combo of that.
At night, he is no longer sleeping 6 hours or so. He now will do 4 hours, 3 hours, 2 hours then 1 hour (I settle to get another hour no feed) and then to bed with me sometimes an extra hour or even 2.
While it is still really hard, I feel better. Mostly because it is a relief to have him out of my arms for even half hour at a time, as I am sure you understand! I still 'wear' him quite a bit, but now we do our morning walking with the pram.

Let me know how you are going.