1099-R Withdrawal

1099- R

I withdrew about $4,000 from my old company's simple IRA under the Cares ACT provision, when money was tight this summer, after getting my wages cut.  I thought this meant that I had 3 years to return that $4,000 to a similarly taxed retirement account. I received my 1099-R Showing the Gross Distribution of $4,000 for this year. My question is:
Do I have to pay taxes on this 4,000 this year or can I return the $4,000 to a different retirement account before I file this year?
If so how do I return the money, is there a form I need to file for this or do I simply speak with my employer or bank?