Living paycheck-to-paycheck and then some puts a lot of pressure on him.
Tips
culture
寅 and 卯 are consecutive years in the 12-year Earthly Branches cycle (寅 → 卯). Eating 卯 year's grain while still in 寅 means consuming next year's supply this year — a vivid image of living beyond one's means.
history
Attested in Li Baojia's late-Qing novel 《官场现形记》 describing cash-strapped officials. A modern near-equivalent is 'living paycheck to paycheck.'