Dear Dissertation Diva,
I wrote two paragraphs today. On a good day, I can do 3 or 4, adding up to a page. This is after taking the subway to the library and locking myself in a room with no internet. It's like pulling teeth. Does everyone write this slowly? I am frustrated that this dissertation is going to take forever!
Congratulations: you're writing! Yes, most people write "this slowly" -- which is to say, you are making excellent steady progress. 3-4 paragraphs sounds like at least one double spaced page to me. At this rate, you can produce 20 pages a month, or a 40 page chapter in two months. Not too shabby. You will probably need to add time for editing, rewriting, or reorganizing, as well as additional research and footnotes, depending on your personal writing process.
Keep going. You are doing the exact right thing. Slow and steady wins the race.