Lost my job and planning on living out of my car and camping places for at least 6-12 months since I haven't done that in many years now. I haven't really been homeless before but it's my next option currently so my funds are going to be kinda limited.

What are going to be the best and least expensive ways to sustain myself with food? I've never lived like this before so I'm wondering what all of the "oh shit"'s might be before I encounter them. In what areas might it be realistic to live off of the land, simply from fishing rivers or foraging? I don't plan on attempting full "survival" mode but I'd like to be out there as long as I can on as little as I can. Any good things to know or experiences are appreciated.