I hit the allowance ceiling once from odd circumstances (catching up lost reading time over one week, in my edge case.) That and I think the default number of given likes allowed in a set period was lower at the time.
Getting a badge for that would make me smile. And when I needed it the most; *exhale* A “hit likes ceiling” badge would say “okay, stop clicking the hearts or you gonna keel from reverse operant conditioning headaches again.”
The Reader badge is a start. These user-contributed badge queries are worth noting and checking out. In your circumstances and needs, you may want to check out the offered extended Reader badge queries.