If you're interested in Asian style dumplings, you can get premade wrappers. I tend to do that. I'm also disabled, with my disability affecting my muscles in general. I have mostly stopped making homemade dumplings, but I do sometimes manage it.
If you really want western style ones where you need to make your own dough, you might want a stand mixer to do the kneeding for you. Then you can use a pasta machine for rolling out the dough. This is a lot easier than doing it by hand and with a rolling pin, but still some work.
One thing that helps me is separating tasks so that I can have a break. For example, if I want to make pierogi, I will make the dough, then leave it alone and rest myself up a bit, then roll it out into flat sheets, rest a little bit again, then finally put it all together and make the dumplings. Then wait a bit before cooking so I can rest up again. Covering the dough and dumplings with a damp cloth or paper towel is essential to that process.
You might want to look into molds for sealing the dumplings rather than doing it by hand as well. You can find these for pierogi and pot sticker style dumplings and some really good ones for ravioli. There are probably more that I'm not aware of.
Oh, and none of the doughs that I have ever made or used required dairy.
I hope any of this is helpful. I'm not sure if I'm answering specifically what you're looking for.