Quarterly taxes

After a long career as a salaried employee, I picked up a consulting assignment this past January.  I am paying quarterly taxes using the safe harbor based on last year's W-2 and 401(K)  and Social Security income.    The estimated taxes, $1500 a quarter, will total much less than the 2023 taxes that will be due next April.  Am  I still OK paying the safe harbor amount?

 

Also, I am not paying any estimated quarterly taxes to the State of Maryland.  Should I be?