Hi, I mailed my 2020 Federal refund in on March 27th, 2021 and haven't received any update from the IRS as to whether they've received it. Should I mail it in again?

I was unemployed for part of 2020 (June-November), so TurboTax said that I will receive the tax adjustment as part of the COVID-19 relief bill passed earlier this year, so I'm assuming that will take the IRS longer to revise my tax refund, but the bottom-line is I haven't received any sort of update as to whether they've even received the return (I've checked the IRS Where's my Refund portal many times and they have no information).