You will get there. It may take longer or it may take shorter, but you will get there. AS is totally correct in preaching patience. At 3 months in I was still a total wreck and definitely not detached. I was married for 7 years, and it was about 6 months in (it helped my detachment to learn that my W had moved on to OM) before I started considering dating. Even then it took me another month to feel ready. I imagine that the longer the MR was the longer it takes, but of course it is all very personal and individual.
That said, I have zero regrets about my decision to date from a moral perspective. My MR was over the day my W BDd me and we separated, no matter what a piece of paper said.
W 34 Me 42 Married 7 years together 8 0 kids 1 beloved dog BD 4/6/2018 I moved out 4/7/2018 I moved back in alone 8/05/2018 I file 3/06/2019 D official 5/7/2019