Who's helping you with this? You have a trainer, right? What does your trainer say?
I know you're in a competition so the answer for you is different. Gosh, I just don't know. I think I'd play with my calories first, totally cut out salt, increase the water and change the foods I eat. Maybe play with calorie cycling depending on the type of exercise you do. Maybe try high protein foods on weight lifting days and higher carb foods on cardio days. Increase the activity. (Don't shoot me.
) I know you're already doing a lot, but maybe add pacing around the room while you watch TV or a short walk when you wake up, eat lunch and after dinner.
Good luck! And just for the record, I think you're doing fantastic. I'm pulling for you! If you weren't in the competition I'd say just keep doing what you're doing!