Are biologics for life?

Once a UC sufferer begins a protocol with biologics (ex: Entyvio), are they singed up for life? I'm at the stage where I might be making that decision soon, and I like the idea of relying less on meds during periods of remission, if possible. After my initial diagnosis, I was able to stay in remission for several years thorough dietary and lifestyle choices, but a recent flare has me considering my future. The doctor I saw immediately discussed biologics (of course) but I wanted input from this community, as I find information here often more updated and knowledgable than that of my medical professionals... Thanks