If you are concerned about the actions or decisions of a guardian or conservator, first talk with the guardian/conservator directly about your concerns and work toward a resolution.  Many issues may be resolved through respectful communication.
This might include clarifying the role and limits placed on the guardian/conservator; finding a compromise that both parties can live with; or developing plans to address the problem and reevaluate later.  It may be helpful to first write down your concerns, clarifying in your own mind what the issues are to help keep the conversation focused when you talk to the guardian/conservator.  If it is an Organization serving as the guardian/conservator, inquire if they have a grievance procedure and follow that process.
Sometimes the problem is based on a breakdown of communication or the situation has become too emotion-laden to deal directly with the guardian/conservator.  In this instance, a third party mediator may be of assistance.  This could be a qualified mediator or other third party.
You may want to raise your concerns with the guardian/conservator’s attorney if you feel you are getting nowhere with the guardian/conservator.  Remember, this action will likely result in a bill for the ward/protected person for the attorney’s time. If you don’t know who this is, contact the probate court to find the name of the guardian/conservator’s attorney, also called “the attorney of record.”
Sometimes issues simply cannot be resolved, and the parties must agree to disagree.  However, in rare circumstances, there may be an irreparable breakdown, such that the guardian/conservator can no longer be effective in helping the ward/protected person.  The ward/protected person has the right at any time to contact the county probate court to request a change in guardian/conservator, though this is generally ill advised before attempts to resolve the problem with the existing guardian/conservator.
You may decide you want a new guardian/conservator appointed and while this may be appropriate in some situations, remember that:
If the current guardian/conservator does not agree to resign, you will have to prove to the court that the guardian/conservator has acted improperly, or not in the best interest of the ward/protected person before the court will remove the person and appoint a different guardian/conservator.  This could be time-consuming and expensive.
A new guardian/conservator will still be in charge and responsible for court-appointed areas of decision-making.  If the nature of the concern is about having a guardian/conservator in the first place, it may make more sense to continue trying to work with the existing guardian/conservator rather than go through the expense and hassle of seeking a successor guardian/conservator.