Sounds a stupid question but getting only odd or clueless answers from HVs...
A is 4 months, an average-shaped 16 pounds. My hands, wrists and forearms are pretty buggered. I managed to bf with a Brest Friend cushion as I couldn't hold him in place with my forearm.
Now he's got too heavy for me to lift just by putting my hands round his torso (as you do when lifting baby in the air during sing-songs). To get him out of his cot I scoop him up with both arms. I used to pull him to a handy place first by his legs, but the HV said never to do that as a hip could dislocate. But that's how everyone I know changes nappies - lift baby's bum up by their legs with one hand, slide new nappy underneath!
Also wondering about lifting him with the backs of my hands under his arms and if that's putting too much pressure on his shoulders. He doesn't complain so I assume it doesn't hurt, but now I'm all paranoid I'm going to pull a limb off in my efforts to keep my hands functional...