You can get better being resupply, fuel. and cook flexible. Every resupply incorporate 1 or 2 cook/no cook food/meal options. Learn to safely light, maintain, and cook over a small contained warming and ember cook fire. This way your can lasts longer.

Remember the wt printed on the can defines the wt of the product in the can which doesn't include the wt of the can. Same with food like canned meats.