Off grid doesn’t mean disappear entirely. So long as you pay your property taxes etc they’ll leave you alone. They’re going to know about you somehow anyway, just as governments have for all time, so don’t be under the delusion of total secrecy. Just cut all expenses as you can, and use auto-pay interest-bearing accounts for the rest.
Just need to prevent them from knowing how many of what weapons you own and how much ammunition you keep... and what you had for dinner last night.