your chakras are always open.
what you want to know is if it'll stay in a higher level of energetic development. all i can say is keep stimulating it GENTLY. a little bit every day will bring it into higher and higher levels. if you overdo it with uber amounts of energy over short periods of time you'll hurt yourself.
As Moonburn stated, your chakras are always open. It is probably better to think of them as muscles. They can be under developed, balanced, or over developed. Being over developed is no better than being under developed. You should strive for balance throughout your energy body.
Lately when attempting to OBE i have gotten a tingling sensation in my pelvis that lasts for about 15 to 20 seconds. And last time i just focused on moving all my energy to that chakra and it started getting that tickling sensations again. it is a very strong feeling. I was just hoping someone could tell me if it is close to staying open and how to do just that? any help would be appreciated.
ben