RG from Humaworm always recommended drinking alot of water to help your body wash out the toxins that the dead and dying parasites are releasing. That and get alot of rest if you can and ride out the storm.
If you believe you have a candida overgrowth you should think about changing your diet to an anti-candida diet. It's basically a Paleo diet, eat like a caveman, low on the carbs, it'll starve the yeasts.
Personally I would wait until the 30 days of Humaworm is over before changing your diet. Don't want to overwhelm your body with changes.