If he's not communicating its a good time to give him space. If he mentions missing your food maybe make something but don't drop by with stuff until he seems ready to interact again.
I know it's hard to not know what he's up to but ya just gotta let him have time to sort things out on his own.
BD: Aug 2012 Separated since May 2013 S born Aug 2013 Aug 2013 H agrees to consider 'baby steps toward working things out' H is/was actively seeing someone?