Welcome to BW!
Wanted to offer some (((((HUGS)))))!!!
I can remember feeling trapped inside trying to make sure that I fit in enough short naps to avoid an OT cycle. It was very frustrating at times. I didn't get the BW book either until my DD was around 8 weeks. Before that, she wouldn't sleep more than 20 minutes at a time unless she was being held. I remember thinking I would never be able to get out of my living room chair! But once I started with the BW advice, things SLOWLY started to turn around. It took a lot of time. I had lots of people, even my pediatrician, telling me to let her CIO, but I just couldn't and wouldn't do that. I know it's hard to see right now, but it will be worth it in the end. People are amazed at how my DD will climb right in bed at naptime/bedtime and go right to sleep on her own with no objections. It takes time...but things will get better!
I never had to deal with colic or reflux, but I know lots of moms on here have, and I'm sure that they will have some advice on how to help your LO sleep more comfortably. And the nap moderators will have great advice too! They helped me out a lot!
Hang in there! Things will get better!