One month to train for beep test and Illinois agility test

any suggestions on how to change up my training? I've been doing jiu-jitsu two days a week. I run around three days a week doing Hal Higdon's 10k running plan. im slooooow. But I've been training to finish a half marathon in May. So training for the Illinois agility and the beep test is definitely a change of pace. I just got notified that the test is in one month. I'm not worried about the push-ups or the situps portion of the exam. Any suggestions on how to structure my training for the month?