Mama, I totally understand your feelings! BFing can def. be overwhelming at first. However, I would be hesitant to put a timeline on "when" exactly BFing becomes easier, because I think that's different for every mom/baby pair. For us, BFing became hugely easier when we finally got nursing in the side-laying position down pat. Then I was able to nurse at night without hardly waking up, and def. without sitting up (we co-sleep). My baby is almost six months old, and DOES NOT sleep through the night yet- she still nurses at least once, usually twice- I def. have not slept more than 4 or 5 hours in a row since she's been born. Also, I work full time, so I pump during the day and nurse on demand while I'm at home, which can be exhausting. I credit co-sleeping and side-laying nursing to my survival.
If anything, I think that nursing becomes easier because you become more in-sync. As a mama, you'll adapt to waking at night to nurse, and as you learn your baby's cues better, you'll be able to nurse practically before your LO fusses. You also adapt to the sleep cycle yourself!
Stick with it, mama! You're doing great- and although going back to work is extremely difficult, you might even enough having a little "adult time."
Running, blogging, gardening, military mama... to Louisa Mae 9/2/09 and June Elizabeth 12/7/10.