I too have had boundary changes. It's prob been 4mths. My T didn't tell me he was going to either. I noticed less contact, less support so I brought it up. At first he told me nothing has changed. Then I kept noticing it and finally he admitted to it. Saying it was detrimental. Forming dependency. He busted his ***** for me to show he cared.
It's been so hard from going to weekend/evening contact to none. He has 2x in the past mth acknowledged me in the evening. But told me it I'll never go back to the way it was.

His new ways are creating such a severe depression and angish. There's no in between for him. I asked. It's hard to basically go cold turkey after 5 yrs. he apologized. Said he was sorry it didn't work out for me wish I had gotten something from it. Well it sure beats the heck out of this. I must have gotten something from it because this is awful. I've gotten worse. He says I need to grieve. Sigh holidays are hard enough!!
Its been really bad his change lately.
Hope you find a way to deal with your changes!! Hoping for some peace with your therapy!