I can see a wrestler taking down another opponent over and over to build a small lead, but doing it repeatedly is stalling and is not being called by the refs.
It is not being called by the refs because it is absolutely NOT stalling. From page 28 of the NFHS rule book:
ART 4... It is stalling when the contestant in the advantage position:
a) Does not wrestle aggressively and attempts to secure a fall,
except when the wrestler intentionally releases the opponent in order to thereafter immediately attempt to secure a takedown.
