One thing I forgot to tell you.. what ReALLY worked was him sleeping on his tummy! I was so scared of SIDS that is why we held him instead.. but at age 6 mos we got a angelcare monitor that monitors their heartbeat to give me piece of mind and then let him lay on tummy.. bingo- sleep.
There is a book that was him to a T called COLIC SOLVED.. I forgot who wrote it.
My son had severe reflux until 4 1/2 months.. We tried everything.. a wedge, prilosec ( worked better than all the others) small meals, mylicon, gripe water, and one one I highly recommend is probiotics.. not just any either we used some from BioGaia they are worth the money..
http://www.childrensprobiotics.com/faq.aspx
I know you don't want to hear this but by the time you try and solve it it will be gone BUT I feel as a mother you have to try and make your baby comfortable. My husband and I took turns 24/7 holding our son. That worked the best.
If I can think of anything else we did I'll get back to you.
I don't think that feeding your baby rice cereal from a bottle to fill his tummy will help him sleep only hurt his growing digestive system.
Sorry this is so scattered it's 130am and I couldn't sleep;-)
Here is the wedge we used
(http://www.pollywogbaby.com/cat--Infant-Positioning-Produ...) and the particular products you are interested in.
Here are the diagnostic codes by product:
Pollywog Feeding Wedge | 530.81;E1399
Pollywog Changing Station Incliner | 530.81;E1399
Tucker Crib Sling | 530.81; E-0621
Tucker Wedge with Sling | 530.81;E1399
Tucker Slings for Wedge | 530.81; E-0621
Acid Reflux Pillow | 530.81;E1399
Comfy Lift Bed | 530.31;1399