Where to begin?

Uny and others-
I want to begin my first cleanse but need direction. I am a 43 yo female with severe fatigue, intolerance to exercise, bouts of brain fog, hand eczema (all my life, but severe now) low Vit D, and bad immune system. I have to be able to function so I cannot do a cleanse that will keep me in the bathroom or bedroom for days, since I have a family of 6 including a 2 year old and we are in the middle of major construction. I already do a lot to care for myself well: organic whole foods, raw organic dairy only for 8 years, low to no sugar, off of wheat and caffeine for 2 weeks now, taking holy basil, pro-omega fish oil, vit D, and catalyn multi. Still with fragile immune system and hands that won't heal. Recent labs were TSH 1.9, neg Thyroid Antibd neg, low ferritin, normal blood. My NP says I cannot have a parasite with negative eosinophils, but I might also do a parasite cleanse just in case. I will research and prepare and start the cleanse once our other bathrooms are up and running (we only have 1 right now). What do I need to do now to get ready? What would be best and gentlest to start with? (psyllium husk / bentonite). How long does this take and how do I know when I am finished?