I would say: Try not to think about it.
Eating enough food, as you are planning to do, will help. Try to stay active, as much as your situation allows. Ride a bike. Go for a walk.
But other than that I would use the time for something else if I were you. Strength and muscle will come back quickly anyway, if you have a decent plan after the layoff. Focus on your family, other hobbies, work, whatever.
Of course it sucks and if you can't help thinking about training... well, think about how your training went in the last weeks/months... think about what you want to achieve, what you have achieved so far. Maybe design a new training routine for yourself.
But most importantly don't stress over it all.