This question is hard to give guidance on with out being able to read your parenting plan and agreement when you divorced.  I understand that the Father moved to be able to probably afford to support his children and comply with the order. I do not think that a Judge would further penalize him by forcing him to pay for the entire expense so it would be in the best interest of the Mother to give a little, given that she has the children most of the time as it is.  But again, that is not an easy call with out reading the agreement.  The Father needs to do so and move to modify given the circumstances. Good luck.