The "Mob Wives" star tells TMZ ... she recently linked up with her "The Hills" compadre and his foundation, Red Songbird, to get treatment for a number of issues she's suffered from since her 20s -- namely, being hooked on prescribed sleeping meds.

We're told just last month, Dr. Drew put her in touch with Jason -- who's since been brought into the fold over at Songbird ... which Renee says has been working wonders in getting her back to a good place.

She tells us a lot of these issues stem from anxiety, depression and former abusive relationships -- which included sexual assault -- and because of her new regimen ... her life is finally getting on track in a healthy and productive way.

In addition to having one-on-one chats with Songbird staffers to talk through her issues, RG is also delving into EMDR -- Eye Movement Desensitization and Reprocessing ... allowing someone to deal with old wounds, but from a safe distance. It also gives recipients a new perspective on how to deal with the hurt.

Renee also gets therapy ... joining processing groups, anger management sessions, wellness discussions and other meetups that help keep her grounded.

We're told Renee came into treatment in California on Feb. 6, and that she's about a month sober at this point -- with no plans to leave until she feels grounded.

As for the Jason connection, Wahler has had substance abuse issues of his own in the past, with more than a dozen arrests. He said back in 2019 that at age 18-23 he was a "womanizing alcoholic" and went to 12 different rehab centers. He's now dedicated his life to helping others.