WAS's are already "skeptical" of any changes the LBS makes....so since you allowed your husband to read the DB book, I wonder if he'll be even more turned off/see your changes as "fake" since he'll know exactly what you're doing from the book.
Either way.... just go about your days as normal... for example: when he comes in the house say hello, ask him how his day was, then go about the rest of your day, GAL, go work out, etc... No need to force any conversation, but when things come up naturally, initiate or respond with a positive outlook/attitude.
me: 30 H:30 tgthr:7 m:4 no kids 5 counseling sessions initiated by H as a LR: Oct 2012 long distance marriage b/c of work since Nov 2012 official BD: July 2013 nothing filed 1/1/14 I dropped the rope
