Is she swaddling him nice and tight? That alone makes a world of difference. There are special swaddle wrappers out there with velcro closures that I thought were a Godsend. Go to Babies-R-Us and ask for the special swaddling wrappers with velcro.
At two months, he maybe on the verge of being too big for this. But let me tell you, if he wants to be swaddled and you do it, it's like an "off" switch for all the screaming.