K.L.
Like most of the moms already said, we let our baby sleep wherever worked but I know what you mean because it gets old when you can't sleep yourself. We all need to sleep sometime. So, here is some advice that may help to at least transition your son to the sleeper, warmth is key... if swaddling doesn't work, try throwing a soft blanket in the dryer for just long enough to get it warm (or make your hubby do it to help out) lay it in the co-sleeper like a sheet, spread firm so it won't bunch, then try laying your son down when it is still slightly warm. This worked for us. I know we're told no blankets at this age, unless they're swaddled but it was the only thing that worked for us and since I was sleeping right next to my daughter and awoke at every little sound and movement... it didn't bother me. Hope you get some rest soon.