If you're not on any medications, follow along with my posts and see how you do, as I'm aiming to recommend small and easy changes. If you are on medications, you will probably need the support of someone who knows your medical history. (but still read along and learn things to take to your doctor)

You might find it helpful to follow @baerdric who has some of the same issues as you, and is managing them with keto and fasting.

Are you able to do seated exercise when your feet are feeling bad, or do you have low energy as well?