The easiest way for me to keep the sweepstakes entry requirements clear is to make subcategories in "My Favorites". . .the categories being "Daily," "Weekly, "Monthly," and "Miscellaneous."
If a sweeps calls for more than one entry, it will fall into one of these subcategories and the web page is saved in the appropriate place.
For Weekly entries, I just choose a day of the week (for me it's Sunday) to go through the entries in the Weekly category. The Monthly sweeps category is checked on the 1st Saturday of every month. The most difficult part is wading thru all the "Daily" entries. I've finally become a bit more selective on which sweepstakes I enter on a daily basis.
As long as the post for a given sweepstakes lists the frequency you can enter, it's "easy-peasy"!
Life is just a chance to grow a soul.