How big is your garden?
Also, there are constant advances in agriculture that produce tremendously higher yields decade after decade. Hydroponics shows just how little is needed to grow a food plant. I have no doubt that someday someone will be growing steak from stem cells in a giant cube. Overpopulation is a myth. The world has a distribution problem due to corrupt governments, not a production problem.
P.s. If you have any pets I suggest you kill them so we can use the precious resources they take up to feed a human.
Do what you can and demonstrate to the rest of us how you can live off your garden plot, and do so for at least a year.
Then, we will have something to talk about.
One cannot have a problem with overpopulation unless one is comfortable with the possibility of billions dying for every seasonal natural disaster.
If you use up the entire planet to grow food, population will keep up with it, and vice-versa. That will ensure that a disaster even in one regional growing area will have serious repercussions in terms of the number of people suddenly going without food.