Developed comprehensive documentation for shrinking disk size in Google Cloud SQL, contributing to the nais/doc repository. The work focused on outlining clear prerequisites, a detailed step-by-step procedure, and robust rollback guidance to ensure safe and auditable changes in production environments. Leveraging expertise in cloud services and Markdown, the documentation aimed to strengthen operational readiness and minimize risk during database management tasks. No bug fixes were addressed during this period, as the primary emphasis was on delivering high-quality, actionable knowledge sharing. This contribution supports teams in executing complex Cloud SQL maintenance with confidence, prioritizing safety and clarity in cloud infrastructure operations.