I'm agreeing with
@sethschroeder that you should put your funds in an account and pay closer to the due date. There's just no value to you in paying earlier.
For myself I pay as I collect Disney Gift Cards from all sources, but, for 2023, I won't add those funds until the dues are posted. edit:
I pay as collected because I don't want a large sum of DGC's hanging around in accounts that could get hacked, or whatever, or hard cards sitting in my desk.
I use credit card offers to get DGC's as they come along and for this year, I estimate I'll finish paying by October, but should have saved quite a bit from all programs that I designate dues as the place the saved money goes. I try to get a minimum of 10% off my Disney cards and have been doing up to 25% but that's an outlier.
Do you have any credit cards that give cash back? Those could be funds that you claim as a discount on your dues.