Software upgrades in Optical Transport Networks (OTNs) present significant operational challenges due to the mission-critical nature of these infrastructures and the necessity for continuous service availability. Current upgrade practices often result in service disruptions, restrictive maintenance windows, and increased operational risks. This paper addresses these challenges by examining practical enhancements to existing upgrade methodologies for optical networks. The research introduces three incremental improvements to standard practices: modified A/B testing procedures adapted for OTN environments, enhanced rollback verification steps, and simplified zero-downtime techniques based on established redundancy principles. Experimental validation was conducted in a laboratory optical network environment with multiple vendor equipment. Results indicate measurable improvements in service continuity and operational efficiency compared to conventional approaches. The findings provide network operators and telecommunications service providers with straightforward, implementable guidelines for enhancing their upgrade processes in optical transport infrastructures. These improvements can be adopted within existing operational frameworks without requiring fundamental architectural changes.