Having a hard time!

I cannot drink water, I just can't do it.

Is there any alternative that might get me to have the proper amount of water?

I can't have anything like water flavoring because almost all have aspertame or acesulfame. I can't have these due to getting horrible horrible headaches.

Because of this I also try to avoid surculose.

Would I be able to make sweet tea without sugar and just drink an 8oz glass or two then have the rest water?

I know you can have some caffeine but I'm paranoid 😅😓