So Dandelion, At 7 weeks out you're probably still in shock. Going back, forth, up, down, back, forward, and sideways is absolutely normal for a BS, often for longer than 7 weeks. It took my mind 13 weeks to start calming down.
What helped me a lot was developing an ego state that served as a n observer. I watched myself ride the waves. I monitored my health. I told myself to do the minimum necessary to keep our life going - paying bills, getting myself to IC and MC, seeing that my WS got to IC. She also broke her shoulder, IIRC, and I got her to doctors' appointments, food shopping, and other errands, because she was prohibited from driving.
I also asked any question I wanted to ask and kept W's feet to a fire.
Being betrayed is a trauma. You can heal, but give yourself time. For me, the worst was 6-12 months out. Since then, I felt better slowly for 2-3 years, and I considered myself healed 3.5-4 years out. YMWV.
The SI rule of thumb is 2-5 years to recover. You WILL NOT feel as bad as you feel now for the whole period. It is hard to imagine at 7 weeks out that you really will feel joy again, but unless you're very unlucky, you will.
*****
I think the BS ought to put a lot of effort into figuring out what they want, figuring out how they'll know they're getting or not, and asking for what they want. I'd recommend putting virtually no effort into cajoling/telling/hoping/manipulating the WS into doing what the BS wants the WS to do.
Asking for what one wants takes the form of, 'Will you ...?' The BS needs to be willing to take a 'No,' but hearing 'Bo' too many times probably should end the M.
IMO, the BS serves themselves best by having some deal killers. The BS still needs to ask the WS to meet the requirements, but the BS also needs to pull the plug on the M if the WS refuses to meet a requirement. My W knew our M was over if she refused to go NC, do IC, do MC (after I vetted the MC and saw her work), being transparent, and - above all - no more lies. But she had total freedom to meet the requirements or not.
*****
I believe in testing the WS's willingness to do the work necessary for R. If they're going to fail, I want them to fail as soon as possible.
But ... I also think the BS should be true to themself. We can discuss different ways for BSes to act, but BSes get to and must make their own decisions.