What are some good foods to eat or things to drink to slow incontinence?

Avoid irritants. There are no good foods to slow incontinence, but there are bladder irritants to avoid. These foods are not damaging to the bladder but affect bladder control: coffee, tea, caffeine, carbonated drinks, acid drinks/food such as citrus, tomato. However, cranberry, blueberry & lingonberry do help protect against uti. Use fresh berries or juice, not cocktail, which is full of sugar & calories.
Fiber. If you are talking about stool incontinence, increasing fiber can slow it down. This is usually our first way to decrease incontinence issues.