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OP
I sometimes drink the ceylon in the morning, however it is going stale
and is getting a little bitter and is requiring more and more additives.
I usually leave my green and white for at night as I go to bed earlier
than normal now due to class scheduling.

For Ceylon going stale, I'd suggest either drinking it up quickly, or
throwing it away. A third possibility would be seeing if it loses its
staleness as iced tea, either alone or with lemon or spices. Toci

Can't be at all sure, but perhaps, just for the fun of it, before chucking the Ceylon, try roasting it in a toaster oven (Lew's method); or even in a frying pan under/over a low low heat, mixing it up often to make sure it doesn't burn. Worth a try. Might bring some life back into it. You can always toss it at any time.
Michael