You are a Contracting Officer's Representative, and the Contracting Officer has given you a draft of what may be a unilateral change order. The first estimate indicates costs may increase $5M to $10M. Delivery will be set back by 3-6 months. Far more stringent inspection requirements will be involved. Experts within your agency disagree on the impacts.

You know the contractor has ways to fix it if they judge the change to be outside the scope of work. How will you advise the Contracting officer to minimize delays to achieving contract outcomes beyond impact of the change itself?