Here is a list of Nar-Anon meetings in New Jersey. It's good to phone before going to double check that no changes have been made to the meeting time or place.
New Jersey
Also, many here go to Al-Anon, a similar fellowship that tends to have more meetings than Nar-Anon. Both programs are about "us" and not the substance they use.
Meetings literally saved my life. It is suggested to try 5 or 6 meetings to find one that seems to "fit" your needs and to give them time to make sense.
You are doing the right thing, to take care of yourself.
Hugs and Welcome to SoberRecovery