IF you can afford it, mumetal is the way to go on the walls to protect yourself.
Personally, when they start that here in my state (now they are just testing the program on certain households) I will raise h e double ell to get it removed. I turn off wifi to sleep. I can still have my Cell Phone near me but turn if off periodically. Cell Phone + wifi on = severe anxiety and fatigue for me. Although I have suspected it for a long time that I am EMF sensitive, I just confirmed it after years of not being able to sleep that if I turn off the wifi, I sleep like a baby.