Take a look at what happens in Nature. Animals eat, then later,when thirsty, they drink. You might think, "Ah, this is because water is not always readily available near their food source." If you think that, take a look at your pet dog or cat. They eat and drink at separate times. They do not stick their head in the food bowl, take a mouthful, and then take a sip of water, before returning to eating.
The point is our stomach acid is there to help with our digestion. If we pour water into it we dilute that acid to some extent. At least, that's my reasoning.
So my advice. Eat. Then, a little later, have a drink to quench your thirst.
This is not to say that I don't have a glass of wine with a meal, or even an occasional beer. But as a habit - keep eating and drinking to quench your thirst separate.