My deepest sympathies go out to you. Time is your friend right now. The sadness never goes away of course, but over time it gets replaced with fond memories and strength that you can draw upon to overcome more things you've never imagined. If you cant ride now don't worry about it. Take your time, it'll come back if you want it to.
It happened to me in 2009, we endured a 9 month elder care ordeal with one complication after another which mercifully ended peacefully for him. Due to the circumstances though I was forced to ignore the bike a lot during that time, and then the sadness and life changes turned it into a lazy habit. But it came back, I remembered that I love riding and I need to ride for my sanity and it represents normalcy. That's what he would want for me.