Hugs for your worries and for your Covid diagnosis,
@gilllsmaad. I really can empathize how upsetting this is.
As
@Ronancastled has mentioned, the good news is that your HbA1c is still really good especially considering the stress of lockdown and feeling responsible for the wellbeing of your husband -- you might also want to consider that based on research (unfortunately I can't find the research article right now), blood sugars are a more important risk factor in heart disease risk than cholesterol.
Do you have a printout of your blood lipids? Somehow the numbers don't seem to add up. The formula for calculating cholesterol according the Friedewald equation (which most labs use) is HDL + LDL + trigs/2.2 = total cholesterol. Based on the formula above HDL and LDL combined already exceed 10 mmol (rather than the 6.93 mmol you report), so something doesn't really add up.
Imo, changing your diet and getting back to low-carb can really make a huge difference. So, it might be worthwhile to see what the results will be. Personally at diagnosis, my 10-year risk of developing heart disease was about 20 percent based on various risk calculators. However, after adopting a low-carb diet this dropped to about 2 percent currently. So, possibly it might be a good idea to see how diet changes work for you and then reconsider? Please also remember that weight loss might temporarily elevate cholesterol.
As to medication -- Metformin doesn't only help with blood sugars but it also has a pretty good record with respect to lowering heart disease risk. So, if you can tolerate it, it might be worth considering -- at least for a while.