Do I forget the LRT at this point and just concentrate on the 180 stuff?
Yes. The LRT is the LAST resort. It's what you do after all else has failed and when you see no hope to save the M. You do it for yourself, to help you move on. Sometimes it brings the spouse back but often it doesn't. Don't go there until all other options are exhausted.
Don't confuse "detachment" with LRT. You should detach, but all that means is to give your W some time and space to sort things out. Since she's saying no to intimacy then she's telling you she wants space. Give it to her.
Stick with your 180s and understand it'll likely take months for her to start believing they're real and not a trick to bring her back.
Also read the 5 Love Languages, since you're still under the same roof it's a good opportunity for you to show her love in many ways that don't involve intimacy.
