First, see if the other parent will agree to the changes you want. It is always better to get the other parent to agree to change your parenting plan than to let a judge decide.
If the other parent does not agree, you will need to go to court. If it is an emergency, you can ask the court to change your parenting plan without waiting for the other parent’s response or a court hearing. The court can make emergency changes to your parenting plan when:
“an emergency situation has arisen in the child's present environment that endangers the child's physical, mental, or emotional health and an immediate change in the parenting plan is necessary to protect the child.” Montana Code Annotated 40-4-220(2)(ii).
If you want the judge to make emergency changes to your parenting plan, you will need to file a motion and an affidavit. Your motion and affidavit should tell the judge how your child’s physical, mental, or emotional health is in danger because of an emergency situation. You should also tell the judge how the parenting plan needs to change to protect your child.
If the judge grants your motion for an emergency change, the judge will still set a hearing date for later. At the hearing, the other parent may be able to argue that the situation is not an emergency and that the parenting plan does not need to be changed.
You can use the general Motions packet to file an emergency motion to amend your parenting plan.