you can't be deleted if your websites don't have enough visits/clicks. i had my adsense account since january this year, but only in june i made my first website and put adsense on it. So, there were about 6 months without having any click on Google Ads for my account.
how many clicks you guys get each day? what's your CPM?
You can make an account at crazyegg.com and view what visitors do on your website and where they are clicking.
You will have a heatmap of clicks and following that map you will know where is good to have ads
