I am receiving a refund from the state of PA this year. I have withholdings and estimated payments. Is it smarter to just let the refund carry forward or is that messy?

I know that I will owe more than my withholdings again in 2021 so if take take this refunds I will have to make estimated payment again. I am just not used to not having to pay the state.  This is due to investment income which is difficult to estimate from year to year.