After you file

In 2018, my previous employer screwed up my W-4 form, where it wasn't taking out any taxes. So, by next year when taxes rolled around I owed taxes back. Obviously. However, I set up an installment plan to pay that off over the course of several months until it was paid off. I've been making those payments for the past five months or so. Since the installment plan is in place, they're not supposed to take out of my federal refund this year to pay for that unless I allow that, is that correct?