I would only point out that currently, under realistic difficulty, it's exceedingly difficult for a nerd to be able to join the Starlets, which requires 50+ Modern Dancing, IIRC.It is possible to start as a nerd and join the cheerleaders. I have done it.
As mentioned, wear a uniform they approve of, slap/kick as a response to being groped. Raise each member (not Christina) to 60+. The more you have 60+ the faster it will increase. Doing sports also helps so join volley ball team, compete and win track on Saturdays, and/or join the starlets.
Maybe if you did the early June start and laser-focused on dancing practice. Maybe.