Amanda Bynes needs long-term hospitalization for at least a year, her doctors say.

Physicians at the Ronald Reagan UCLA Medical Center will submit a recommendation to the judge overseeing her mother Lynn’s bid for conservatorship, stating Bynes needs prolonged treatment and should remain in her mother’s care, Radar Online reported.

“Her diagnosis is complex, and the appropriate drug cocktail to treat her hasn’t been achieved…Lynn needs to be granted permanent conservatorship because Amanda wouldn’t agree to continue with treatment, ” an insider told the gossip site.

Bynes’ mother won a temporary conservatorship over her 27-year-old daughter and her $3.5 million estate on August 9. The outcome of a September 30 hearing determines whether the bid will be made permanent.

The former Nickelodeon star had been showing erratic behavior for months leading up to the conservatorship. She was finally committed to a psychiatric hospital in early August after she set fire to a stranger’s driveway in Thousand Oaks, Calif.

Doctors are treating Bynes with schizophrenia though she has not been formally diagnosed with the mental illness, reports Radar Online.

“She has her good days and bad days, and the goal is obviously to get her therapeutic and stable before being released. Given time and the correct treatment and medicine, Amanda could and should absolutely be able to live with it and be a productive member of society,” an insider told the site.

“In fact, she wouldn’t likely suffer from symptoms of it if she stays on her medication.”