You should be aware that the IRS has not processed mailed returns for many weeks. Returns are stacked in piles in trailers near regional centers waiting to be opened and processed by the IRS. The IRS has not said when processing of mailed returns will get back to normal.
Efiled returns are being processed. If there is any way possible for your to efile your return, you should efile it.
See this current status of IRS operations:
https://www.irs.gov/newsroom/irs-operations-during-covid-19-mission-critical-functions-continue
