I'd suggest talking to your T about. I did. She sees how attached to my ex-T I am, and she knows my history with "mother-figures". She told me to be honest with her if I feel myself getting too attached and she'll help me lessen it without punishing me or taking anything away. It's really important I don't idealize her.

But I also understand that talking about it to the person you feel that way about can be difficult.