It really is like hell going through transference. I had severe maternal feelings for my T and my attachment was so bad I thought I would die without her!
It does lessen though, I can tell you that.

The only way that worked for me was to talk about it. Talk, talk and talk as much as you need to.
I'm coming through it now. My attachment and maternal feelings are still there but they're less than what they used to be.

The only way I can describe it is as a blanket of sheets suffocating you and every time you talk about it a sheet lifts of you, eventually making it easier for you to breath.

I was so embarrassed when I first brought it up with my T, in fact I had a complete melt down and text her to tell her I hated her and didn't want to see her ever again.
This is was my turning point of getting over it. She wasn't phased at all. In fact I think she knew what was going on before I did! I even told T I loved her at one point, that was difficult to say! But I brought it into the room and we talked about it.
I found that my transference and attachment deepens and hurts more when talking about really painful things which bring up awful feelings.

Have you discussed this with your T yet?
ETA- I read a ton of things online about transference, attachment and the like. That really helped me too.