How do you know it's the meniscus and not ITB?
You should see a physio and get them to diagnose it as well as assess your muscle balance and advise you if you need to add any strength, flexibility and or motor control exercises. Running will definitely make a meniscus problem worse or delay recovery. I'm resting my own. Make sure you are doing equivalent time pool running, cycling elliptical machine etc to maintain your fitness. Good luck. A knee support won't help meniscus but there are bands that you can wear for your ITB.
You might also benefit from US,TENS, laser etc.