I don’t think it’s too late for you to prepare. I know many people say store food, medicine, goods. But honestly I think after a certain point skills will be the bottle neck. While having food, and medicines stored up will be very useful, skills is what will determine who will last. When I say skills I’m referring to skills such as gardening, hunting, and making things (think of taking wool from a sheep and making clothes) or having the knowledge and know how to make a solid building from a tree. Yes my examples are probably crude (to a certain extent) but go back about 2-4 generations they did not have most of what we think are common or readily available. That’s where I’d make a start.
As for the family (which is the only concern I know I can talk about), with any luck they’ll find some of the hand crafts (which are excellent gifts besides prepping skills) are worth learning and persevering (not to mention safe $$ after a time). Which can help with becoming more prepared for the long run)
This is my two cents and my probably optimistic view on knowledge and skills…..I know that things probably need to get really bad – or worst before they may become valid but I almost always figure expect/plan for the worst so your not caught unawares. (side note I probably will but I am working on being a bit more optimistic for the future)