Final answer:
Fred is experiencing the disenchantment phase of retirement, where the initial excitement fades and he feels restless, missing his usual routines and social interactions from his working life.
Step-by-step explanation:
Based on the information provided, Fred is likely in the disenchantment phase of retirement. This stage typically follows the initial honeymoon phase and is characterized by feelings of restlessness or disappointment. After looking forward to retiring, Fred expected to find satisfaction but instead misses the interaction with customers and is struggling to find ways to occupy his time. This can be a period when the initial excitement of retirement fades, and the reality of daily life without work sets in, leading to disenchantment.