On being ignored

So, I'm a fairly independent person. I don't like to be micro-managed, but I do appreciate feedback. I've now sent the boss my conference abstract 3 times - no response. The first time he verbally commented, the second time no acknowldegement of receipt, and I haven't hear anything of the third yet either. The thing is that I know he's worked on my labmate's abstract already. Maybe I'm just frustrated because I'm still working on this same damn paper from OCTOBER that he never responded to either other than to say it was a good draft and that he wanted me to wait for the broken instrument to be repaired. So now that I have that data, and a lot more, I'm trying to figure out what to incorporate - the control system is interesting but not vital to the paper, do I include it in the main body or just the supplementary information? I get that this really is MY paper, sole student author and all, but some feedback would be nice so that I can meet his initial expecations without having to rewrite the whole damn thing because I couldn't read his mind.