We recently started our dogs on Fromm Weight Management Gold and are already seeing excellent results.
https://www.gofromm.com/dog?specs=f_Attributes:Weight+Control!!-10!!
Click on “weight control”
Also, if you are going by the recommended daily amount on the bag, I would cut it down to the very lowest amount recommended per day, divided in 2 meals not 3.
And I would not leave food down/free feed. Feed them in separate dishes, pick up the food if they don’t eat or want to finish and serve at the next meal (cover and store in the fridg)
Let them skip a meal if they want after all you want them to lose weight, right.
Make sure they always have fresh water available.
