Jim's holiday greetings!
Here is a link to a blog post of state pitch count limits -
(1) it is UNOFFICIAL
(2) it is subject to error (s) by the "transcriber" (that would be me)
(3) not all states have published their rules yet, and some are taken from news articles
(4) I have not seen any indication that any state expects game officials (umpires) to keep track - only to enforce rules when they are informed of a transgression.
(5) Some states appear to expect the "home team" to provide an outside "tracker"; most seem to expect inning-by-inning count comparisons to resolve differences as soon as possible;