Habits of irregular meals, not drinking water.

Hi mummies! I have a concern that has been around for sometime as i knowwww it could affect my baby's health. Since young i have an habit of not eating proper meals, i could go on a day with only a meal or two or some days even if there isnt any meal i am okay. Adding on to that, i dont drink waterr regularly! Probably half a cup every 2-3hrs, unless im having a meal i try to drink up alot. Lately im into Carbonated drinks which usually im not even interested. Is there any advice? I really want to take a good care of my health so i could do the same for the baby, but i can't seem to be doing whats best.