In the state of NV in an uncontested divorce, could a judge allow the custodial parent take significantly less child support?

If the facts are as they may be, "yes."  Child support may be modified (per what are sometimes called "deviation factors") for a number of reasons, one of which is "The cost of transportation of the child to and from visitation if the custodial parent moved with the child from the jurisdiction of the court which ordered the support and the noncustodial parent remained."  For a much more in-depth explanation of Nevada child support, click here.  if you have specific questions about your particular situation and court order, you should consult a family law specialist.