B.,
I had the same issues with my second daughter. Sleep positioners/wedges weren't enough of an angle, and neither was putting a pillow or phone books under her crib for her when she was that young. (I tried all these things, and the phone books are a big help now at 7 months when she has a cold). My pediatrician recommended the tucker sling (www.tuckersling.com), which allows you to put them on a wedge at 30 degrees safely by keeping them from slipping down by using a harness that goes between their legs. It was invented by a Dad with a baby with severe acid reflux who had to sleep at a 30 degree angle. There's another similar device too, but I can't remember the name. I never did try it because I couldn't figure out how I would use it while she was swaddled, and she would only sleep about 5 minutes at a time unless she was swaddled. There is also a bed called the Amby Motion Bed, which allows them to sleep at an angle, but it's not a crib. You can find it at www.DrSears.com
I swaddled my daughter and had her sleep in the fischer price baby papasan in her bassinet until she was about 4 weeks old, then she started moving too much, so I used the Kiddopatamus SwaddleMe blankets that have a hole so I could strap her in to the papasan, and then swaddle her. Of course, it was quite a trick, and she woke up a lot and I had to start all over rocking her back to sleep, so we moved on to her car seat. I actually totally covered up the straps with the JJ Cole Bundle me, so there was no strangling risks and I didn't have to strap her in. I still wasn't entirely comfortable and moved on to a Moses Basket. The close in sensation really seemd to help her a lot. I elevated one end of the Moses basket by putting it in a pack n play and then putting a 2x4 under the feet at one end of the pack n play.
My sister swaddled her son and put him in the Boppy like you have for about 3 months, in a bassinet next to her bed. I was not comfortable with that personally, but she didn't have any problems.
For the babies that really have reflux problems, and a strong moro reflex it can be really tough, so I wish you luck finding something that works for you.
Enjoy your daughter. This is a tough time, but she will likely keep improving and start sleeping better slowly over the next 6 weeks or so. I kpet both of my girls in my room with me, in a bassinet near the bed, until around 6 months, and they transitioned easily to their crib and own room at that point.
- A.