Pacific Gas and Electric deferred dividends paid

PGE deferred paying any dividends for 5 years.  In 2022 they paid all dividends that were due from prior years.

 

Do I have to report all that income as dividend income in 2022 or is there a way to mitigate the tax I may owe?

 

PGE indicated talking to tax advisor on how to manage.

 

TIA