It's true that water intake is good for digestion. Distribute your water intake for the day, especially in between meals so that you can have more water. Drinking water with meal may end up consuming less food and feeling of fullness after eating. Also having a glass of warm water early morning and bedtime have many advantages.
Next Steps
You can consult online for detailed treatment
Health Tips
Difficult digestion has other causes too. Take a look into your daily routine and overall helath once.