G.♣.
My oldest was exclusively breast fed for the first 4 months, and the sleep deprivation stinks!!! When my second was born, somehow it just didn't stink as bad. I think it was partly because I new to expect lots of wakings. Even though I was told my baby would wake me that often, the reality of him actually waking that much was just so overwhelming to me. When my younger son was born, I guess I just knew that that was what babies did, so it didn't effect me in quite the same way.
My younger son did have swallowing issues and had to be bottle fed. I couldn't keep up with the pump, so we did have to supplement with formula. He did fine. Sometimes his bottle had breast milk, and sometimes it had formula. He didn't care. The kid just sucked it down.
One thing I do very strongly recommend is that you introduce a bottle right away. I really do mean right away ... within a few days. My oldest had a bottle the day he was born, and my youngest was 3 days old. Never had nipple confusion.
I used to see lots of posts that said something along the lines of, "Help! My 6 week old won't take a bottle, and I'm going back to work on Monday." I think very well meaning people have told moms not to give bottles because they cause nipple confusion. My husband used to give the boys a bottle when he got home from work each day. This gave me a little break and gave him a chance to bond with his son. Worked great for us!