Is my therapist breaking up with me?

For context I’ve been seeing this therapist for over a year now ( from weekly to fortnightly and now as of today moving to every three weeks) and have been making good progress, today during the session she mentioned that I am making huge progress and making realisations that take people years. She then mentioned that ‘how does staying at every three weeks feel’ as she feels that over the next few months I will probably cease regular therapy. Her exact words were “ no one knows when therapy ends but my guess would be in the next few months” What! Why?! She is breaking up with me? Is it because I’m too hard as a client? What is it.