Just view wearing the bracelet for 3 minutes as positive and start from there. You might then try increasing the time she wears it gradually it over a period of time. For example - if she has a favourite TV show, have her wear it for part of the program and then give her a special reward. Be consistent about doing this each day and gradually increase the time. Make it clear that it will come off after a short period of time, she might be more receptive to wearing it for a wee bit longer each day. (Maybe she also has a favourite activity but the TV thing popped to mind because actual time is usually meaningless to little ones and TV shows provide a relative time reference.) Good luck!