Cass - sounds like you are doing a great job!! I have a 9 week old and it sure is a tough gig and can be very lonely at times - HUGS

I know babies have a 'wonder week' about 5-6 weeks too, so that might be adding to the problem, they are generally more unsettled and more high maintenance (if thats possible LOL) Google 'Wonder Weeks' for more info, really interesting stuff.

Also, once Bailey hit 6 weeks he started having troubles with wind, so this made him hard to settle, could that be a possibility with your little one? Maybe try to get a bit of wind out of him, if bubs is more comfortable they will likely settle heaps easier and stay asleep, there are lots of wind remedies you can get from the chemist to help if this is an issue, or do the bicycle legs with bubs to help move the wind from the belly

Good point from Tenar re trying a different (maybe bigger) dummy - Woolworths sell lots of different Tommee Tippee ones if heaps of different shaped teats

Hang in there mate, every day gets a little easier!!