Given where you are right now, I think your feelings about attachment are selective. If therapy has been working for you, then maybe you don't need to worry so much about it. Most attachment is unconscious, so I think trying to control/avoid/temper it is kind of fruitless and probably not therapeutic as it seems tied to the very issues that are problematic. Focus on finding a qualified and skilled T and let the attachment issue take care of itself. You also are lucky in that you have "Sparky" (I always felt a lot of affection in your nickname for him!) to help you initiate the search, and your long time T to check in with during any therapy as a safeguard against getting stuck in unhelpful therapy.

While it may feel painful and scary now, your attachment to Sparky and your recognition of it isn't a bad thing. As the pain fades, the warmth that will remain is a very good thing.