Welcome back, MammaKenna,
Sorry to hear of the stress and loss you have endured these past five years. There have been many new versions of a LCHF Diet and support for IF in that time, more health coaches will promote a reduced carbohydrate plan, more books and websites with health advice. The two week challenge on DietDoctor is a good way to re-commit to a Ketogenic Diet, and with fasting, the IF part is easier if the foods remain very low carb. https://www.dietdoctor.com/low-carb You already know there is a great deal of information and support on this forum, let us know how to help.
All the best,