As long as you do 3 a day, you should keep getting 3 a day. If you miss and only do 2, it drops you back. Sometimes I'm too tired to think of a 3rd so I just submit a blank template then delete right away. Also if you submit 0 once you're on 3 a day, it shouldn't effect you. As for that backlog, personally I would recreate those ideas on the days I submit and submit them as soon as I created them. I quite often scroll through "my images" for stuff I "made for later" :)