Don't buy canned dogfood.
It's expensive and not that good for your dog
buy inexpensive cuts of meat and put in the effort of cooking some up ever 2 or 3 days
consider these things which are cheaper tham dogfood:
chicken livers, chicken hearts, cube steak, ground chicken, ground turkey, chicken thighs.
always cooking it is a habit to get into but it's not a big deal.
Also...i have a fam of 5...sometimes it's cheaper to buy a lot and portion off some for the dog that will not be spiced.
be aware that they need more meat for a serving than dry dog food be suse dry dog food bloats up in their stomaches.
you can add rice with meat juices if you're low on meat but no potatoes.

Do you/Can you add veggies like peas and carrots along with rice? I've been thinking of making more natural food for my little guy, so the timing of your post is great!