Ren - that's sounds really really normal. DS used to feed for such a long time. I know everyone says it, but try not to worry about 'getting things done'. If you just try to get one thing done a day then that is plenty. I used to try to do laundry and dishes and groceries and walk the dog and cook dinner. When i couldn't do it all i'd get frustrated and feel useless. Newborns (especially when it's your first time) are a demanding full time job.
I found that my hugabub saved me.
One day she'll feed for 10 minutes each side and you'll not remember those hour long feeds. But she's just a tiny bub now, and she needs all that good food and cuddles.