I've not seen any waivers for Reserve NIOBC. You will not get a waiver for DCOIC, and neither for INDOC.You will have to attend NOSC INDOC (because your paperwork has changed since you were enlisted). You will have to attend DCOIC. You will likely have to attend all of RNIOBC.
Some people gripe “I already know most of this stuff, why am I here?” Smart people say “I already know most of this stuff, so this is an opportunity to help along my peers and improve areas where I’m weaker.” Attitude is a huge part of being a successful JO.
Just ride the wave and bring something to read.