“But is it time to do that now?”
Depends on where you are...
If you are in Dallas, it is worth considering.
In my area? It’s time to start planning for it, at least. 30 days?
Normal Midwest rural Winter planning will take care of a lot of it. Here you’ve got to be ready to stay in for a couple of weeks (sometimes without power) every year, anyway.
Already have plastic for the windows and the camper (normal stuff), and I’m already gathering wood (First time we’ll use a lot of wood will be this winter, despite a large fireplace and being here for 11 years.)
Got a new, larger genny this spring, as well. Need to lay in some water, some canned meats, and we’re good, with an LP backup being the camper. Defense is another matter, entirely.
The REAL question is, what happens if the infrastructure starts to break down. Power, internet, etc. Communications will be tough, but that has solutions I already have.
That's where your other matter (defense) comes in.
I'm going to try to find a link you'll enjoy...
Pandemic - Episode 109
“The world is under attack from terrorists with deadly nerve gas and a global pandemic that kills millions. Navy SEAL Cade Courtley will show you how to escape from a gas attack, create an isolation room, and defend your house against dangerous looters. “
http://www.spike.com/episodes/dxhbrm/surviving-disaster-pandemic-season-1-ep-109