Making savings last after losing my job - what worked for you?

We are a household of 18 and need to cut costs quickly. I have read a lot of threads here and could not find my exact situation. I listed every subscription and found several I forgot.

Subscriptions first, then the phone plan. I saved about $300 a year just by switching to a cheaper plan.

A simple budget with three columns, fixed, flexible and optional, made decisions faster.