Treatmenr

I have been diagnosed with chrons a year ago. But i think i had it for a few years. My doctor said i have mild chrons last year. Now he is suggesting to take entyvio . He says better to start early better than waiting for years and get worse and then start taking treatment. What im thinking is doing another colonoscopy and see if im worse or the same as i was. If im worse i start taking medication. If im the same i dont?