D.A.
Meetup.com is a good place to meet like minded people, also have you tried the hospital where you gave birth? Many have New Mom's groups/classes.
Also, neither of my kids were good sleepers. Both had GERD (reflux). My dd was a silent refluxer and learned to take in only a couple of ounces of breast milk at a time. We nursed every couple of hours throughout the day and night. I found that going to bed when she did, made it easier for me to get enough sleep. I finally got her on probiotics (after trying prescription that did little to help) and this did wonders. I took her to a Naturopath and we were able to work things out.
With my ds, he too had reflux, spitting up constantly, gassy, etc. We started him on a probiotic at 2 wks (he came out so fast he didn't get the fluid out of his system). This helped and he did better than my dd. Both were tiny things (still are - like me) and I think this made a difference in what they could hold milk-wise. They just needed to nurse more often until their little systems caught up. But the probiotics definitely helped with the sleep patterns. They were lengthened, still not what I would have liked, but better. I just learned to go to bed early, so I could get enough sleep. I also co-slept, so while my little one nursed, I could semi-sleep at the same time. It made is so much better. I didn't start off co-sleeping, but it was a sleep saver for me.
Good luck and don't forget to check your local hospital for a New Mom's group. Many do offer them.