I recommend organizations to draw a flowchart with the main steps in the life cycle.
Then, design a table where the first column identifies the main steps. The other columns include topics like aspects, impacts, legislation or regulation related, legislation or regulation compliance situation, evaluation parameters and final result with decision upon significance.
Remember, ISO 14001:2015 uses the word "consider". So, the life cycle perspective implies the consideration of the material life cycle associated with products and services, not requiring a detailed assessment. Your organization should carefully determine which stages of the life cycle it can control or influence, which can vary widely depending on the context.