You are at a place where you are stable right now - that's great!
Only you can decide whether it's time to make changes to your therapy schedule, but I would offer a caution. It may be worth considering that the consistency you have experienced with your current therapist has been a contributory factor to getting to where you are right now, and reducing it at this early stage may have an impact on that.
I was in a similar position to you a couple of months ago and my T suggested not making any changes right then. Sure enough life came around and bit me on the arse again and I'm grateful I still have that weekly schedule in place!
There will come a time when you feel it is right to reduce and stop therapy, but I don't think it's something to be rushed. I think it's likely that when that time comes, your attachment/abandonment issues won't be triggered in the same way. It's important you listen to the feelings evoked in you.
So glad you're doing well Scarlet