First, don’t let your dog starve. Having him eat on a consistent schedule can prevent him from getting too hungry and rush his meal.
Second, you can use dog bowls which are designed specifically to slow your dog down when eating. These bowls have obstacles and narrow areas that would force your dog to eat slowly.
Lastly, you can put your dog’s food inside dog toys which don’t release the food easily. These toys require interaction from your dog through licking, shaking, or solving simple puzzles. Not only do these toys help your dog eat slowly, but they will keep him stimulated and entertained. It’s also a good way to teach your dog to work for his meal.
Dogs also tend to eat kibbles slower than wet food because they have to chew kibbles more. You may want to check out https://pupsnpaws.com/ for a huge selection of dog kibbles for every breed.