Switch from new regime to old regime for senior citizen

Hello, 

I am a senior citizen with income from dividends and deposits (savings account and Post Office Senior Citizen Savings Scheme). I don't have any income from business. For AY 2024-25, I am filing under new regime (since it is the default). If I wish, will I be able to switch to old regime in the next year or in the future?

Thanks in advance!