When can I sell my staked Ethereum on Coinbase?

I'm curious to know, as a holder of staked Ethereum on Coinbase, when exactly would be the appropriate time to sell my holdings? Given the fluctuations in the market and the potential impact of staking rewards, I'm seeking guidance on the ideal moment to cash out. Are there any specific factors I should consider, such as market trends, staking maturity periods, or changes in Coinbase's policies? Additionally, what advice would you give for optimizing the sale of my staked Ethereum to maximize profits while minimizing potential risks? Thank you for your insights.