How are you testing your iPad's battery health? If this has been established remotely by Apple Support - or as tested by an Apple Technician - this will have been using Apple-proprietary software to which only Apple have access.
Prior to release of the 2024 models of iPad Pro M4 and iPad Air M2, the native Battery Health feature has only been available on iPhone - whereas now availability of this feature has been expanded to include these two models of iPad.
As such, you have presumably been (a) using either a third-party Windows PC or Mac utility App to estimate the Battery Health of your iPad, or (b) have been interpreting the iPad's own Analytics log data which does not of itself provide a definitive analysis of the iPad's battery health.
Perhaps you can provide some insight into to your iPad model, your typical usage, and the battery life/endurance that you are experiencing. With more information, contributors will have a better understanding of the problem that you may have.
While usage will obviously vary between users, you might reasonably anticipate anything between 8-15% of battery utilisation per hour - high screen brightness and/or CPU intensive Apps making greater demands upon battery life than when used for non-intensive tasks, or with reduced screen brightness.
Also, as an average, you might expect to observe ~10% battery utilisation per day with the iPad completely idle in its sleeping state.
