Stint

noun
an unbroken period of time during which you do something
“there were stretches of boredom”
Similar: stretch
verb
supply sparingly and with restricted quantities
“sting with the allowance”
Similar: skimp, scant
noun
an individual's prescribed share of work
“her stint as a lifeguard exhausted her”
verb
subsist on a meager allowance
“scratch and scrimp”
Similar: scrimp, skimp