Third trimester

I feel my energy level is dwindling downward. This past week was really a struggle to get up and go to work. Some days… most days… I just don’t feel like moving lol I’m just so tired. I drink at least 4 16.9 bottles of water a day. It’s a struggle for me to increase to get to 6. I also drink juice, iced tea, ginger ale, and sprite. I eat 3 nice meals a day and snacks throughout the day so I’m no starving by the time I eat my next meal. I eat fruits and veggies. I just wish I had a little bit more energy. This will be my first baby. Am I being too hard or myself??? It is normal to be almost as tired in 3rd trimester as I was in the 1st???