For many years, I went once a week, every week. At some point, that changed and now I see T once a week, every two weeks. Also, she only works 2.5 days a week (that is, she's only in the office then), so it feels like a much longer time to wait between sessions. I can call anytime, and if I say it's urgent, she will call me back, even if it's not on days she is in the office.
I'm sorry that your T is cutting your sessions down. I think she made a mistake in telling you why she is doing so; it does nothing to help you and, in fact, has hurt you. I think she could have said something else, "I need to cut your sessions down to once a week." Period. She didn't need to tell you why. I would point this out to her. I'd be interested in her response.