Our old frost free fridge was giving problems and we bought a new conventional fridge which requires defrosting atleast twice a week exchanging the old one.
I used to push the defrost button before going to bed twice a week on Sunday and Wednesday.
Recently I bought a smart plug socket which has built in Wifi. As per instructions I installed Smart Life app on the mobile and could connect the Smart Plug to Wifi Network and set it up to stop at midnight and start at 3 AM every day. I could have set it up to work only on Sunday and Wednesday also as being done by manually pushing the defrost button.
I am switching off my Wifi Network before going to sleep in the night and even then the smart plug works because it has built in clock.
Wonderful Gadget!