I only put in elimination of proxy voting because the law doesn't give the option of adjusting the default or maximum duration of a proxy. If any members have issues with the duration of a proxy, the only option is to shut off proxy voting. Personally I don't have a problem with it, since the person granting proxy can place any limitations they like.
As far as how to handle making the changes, if the board (as the proponent of the action) is open to friendly amendment, the changes can be made before the bylaws are passed. Otherwise the bylaws must be passed, then amended. Amendments can be made the same day, which I highly encourage due to the limitations on member meetings in the draft bylaws. (We have one general membership meeting per year; any other membership meeting is a special meeting, with an agenda limited to the purpose stated in the notice of the meeting.)
73 de KC0DZY