No.
Qualified charitable contributions must be made by December 31 each year in order to exclude that amount from taxable income.
If you want to read more about how to donate your RMD, I think this article is very useful. I recommend it to all my clients.
https://money.usnews.com/money/retirement/iras/articles/2017-12-04/how-to-donate-your-required-minim...
