How do I report a reduction in income?

Or you can go in there and possibly sit over an hour or 10 min depending how busy. Don't forget Identification. You can report it right there.

You can report your change online at www.socialsecurity.gov, or by calling toll free at 1-800-772-1213. If you’re deaf or hearing-impaired call TTY 1-800-325-0778. Mail the information to your local Social Security office or in person if you prefer. If you receive SSI, you should ask about our options to use the automated toll-free SSI Telephone Wage Reporting Service or the free SSI Mobile Wage Reporting Smartphone app. https://blog.ssa.gov/reporting-changes-is-your-responsibility/