Anyone else have oil heat? 🛢 let's cry together

First time home owner and didn't expect the cost of oil heat. Any one have any solutions or experience with subsidizing the heat with other methods like wood or filling the tank my self with died diesel? Have thought about switching to propaine but thats also a large bill around $7000 I have spent a far bit of money now spray foam insulation where I can. Thought I would field the question to possibly lower a $4000 dollar heat bill this winter. Thanks everyone try to stay warm this year!!!