I am speaking as a New Jersey resident who got his license not all that long ago. I think the same laws still apply, though they recently passed some new laws that will change the system sometime next year.
You can practice with your permit as long as you have a driver over 21 who has had a license for at least three years, between certain hours.
Typically when you get your permit you should have been assigned a date to take your driving test, probably some time in February. Since it’s been over six months since your permit was issued, you can take your driving test any time. Once you pass that you’ll be issued your provisional license.