Sure, I wouldn't put 100% of my cash to work right now, but I think it's sensible to come up with a list of stocks you feel are beat up, and dollar cost average buying them.
Of course this is hard to do if your portfolio is 100% invested already, and you have little cash left.
S&P crashed in 2008 and recovered in 2013.
1 year is way too short a timeline. Maybe 5-10 years is the shortest time horizon to not be worried about market timing
EDIT: what part of this comment merited the cascade of downvotes (-5 at this moment)? You can verify the first two points fairly easily, and the last line is general advice given by many financial professionals and evidenced by the first two.
Do not average down.