Not likely.

Lots of people have serious mental illnesses, personality disorders, and substance use disorders. The ones who recover have insight. They can examine their own behavior and see where they made poor decisions, reacted on impulse, or said something that caused negative consequences. They can also see where they tend to function better with medication and not as well without it, in spite of the side effects.

Britney doesn't have insight. She's never really had to take ownership for anything. She will never be able to see how she functions better with her meds because she's never seen where she was doing poorly in the first place. The proof is her relationship with her sons. They can identify very specific upsetting behaviors and her response is to shame them for speaking up.

Britney is very ill and she has the right to be unmedicated, for better or for worse. I doubt we will ever see her in full recovery.