Yes, I have done a half marathon, and in fact, I'm training for another one. I strongly encourage you to train for it. First,you have to be committed to it. It's tough. It's okay to be nervous and wonder if you can do it, but you have to be definitely sure you want to do it.
You need about 6 months to train, so you have plenty of time. It won't take all your time. You can do it if you run 4 x per week, as long as you do it right.
The thing to do is start now, start reasonably, and be smart. You don't want to add more than 10% per week. You'll want to gradually increase your mileage so that you can do at least 15 miles comfortably. In addition, you need to run some 5k and 10 k while training so that you can understand the difference between training and racing.
Good luck, KT. If you need any help please ask.