I know a few people got off WL from R1 during the R2 period (one is a friend of mine, and he did nothing). Stay strong. I know more waiting is tough at this point but there are many people holding offers from multiple top programs. The turnover really starts in April.
I'm sure my friend didn't do anything. Kellogg wasn't his top choice, and he got in Harvard in R1. So he didn't actively pursue Kellogg after the original WL. I don't know how many WL Kellogg has at this point. But they just started reviewing R3. So it might take a while...