I'm hoping to be removed from Wisconsins sex offender registry under wisconsin state statue 301.45 (1m) I dont know how

This is a fairly involved process and you will definitely want an attorney to be assisting you if you want any meaningful chance of success. Essentially, you will need to convince the court and the prosecutor to stick their necks out for you. I was successful the one time I tried this but those were fairly special circumstances. I would be happy to talk with you about your case if you would like.