I need 150 more correspondence hours. Does anyone have any suggestions how to get those really fast?

A lot of Energy Drinks and no sleep.

Defense distribution management is over 150 hours and that's your best bet. Hit me up.

In much the same way one gets to Carnegie Hall: Practice, practice, practice. But seriously, are you maxed out for PT and Weapons Qual points? Those are usually east to get as long as you want to put in the effort. Instead of correspondence courses how about enrolling in some college classes either on post or through one of the many college who offer distance learning programs? Whatever you decide to do don't look at the quick easy route unless it contributes to your development as a leader.