Another really important step is to turn off your Wi-Fi at night. It would be best to hard wire your home so you have no Wi-Fi 24/7 in your home, but I realize many are unwilling or unable to take this step.
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It’s important to realize that the Wi-Fi in your home is nearly always more of a danger to you than what’s coming from outside your home. You can confirm this by measuring the microwave signals with a meter, and seeing what your exposure is.
The fact is, you don’t need Wi-Fi while sleeping, so this is a wholly unnecessary exposure that is easily remedied by turning it off.1Sleep — Why You Need It and 50 Ways to Improve It
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