I take 1 gram of vitamin C morning and evening. That has been my practice for over 30 year.
Just one quick thought for tonight as I have just spent 16 hours working on catching up on back tax paperwork, and need sleep. Your height to weight measures indicate you are very thin. I wonder if you eat enought good fat like extra virgin olive oil, coconut oil, omega-3 capsules (soften in mounth a bit, bite, and swallow the oil, spit out the empty capsule), salmon baked with skin on top to get crispy and eat the skin with the salmon. Also don’t remove too much of the fat from steak, and eat the skin on baked (not breaded) chicken. I had a friend who was seriously avoiding fat to lose weight. Eventually she needed gall bladder surgery to remove a bunch of gall stones. Also eat some butter, never margerine. Fat is needed in the diet to trigger dumping of gall from the gall bladder. How much fat do you eat a day. How much carbs and protein. More later when I am awake and done with more taxes.
Your sympathy is appreciated, but my husband died in 2005. I have been with my current partner for 18 years. He seems to have fully recovered from his prostate cancer, and I make him a weeks supply of supplements to take each day of the week. Cheers