Um, my iPad Pro (2018, 11 inch) battery is draining at an alarming rate!

I suggest contacting/reaching out to Apple Product support and services.

Tap on the first link below and scroll down some to get to the Apple Product Support section and phone numbers for your location/region.

https://www.apple.com/contact/

OR

https://support.apple.com/en-us/HT201232

Best of Luck to You!

You can be peeved, or you can determine what exactly is using your battery faster. Go to Settings > Battery and wait a minute for the apps to populate. You can easily see what is using your battery the most and make the appropriate changes, such as force closing apps which may be continuing to run.

Also, when you do an iOS update, it is a good idea to Force Restart your device after the update. This clears out little issues which sometimes happen with an update. Do the following:

Force restart iPad

• On an iPad with a Home button: Press and hold the top button and the Home button at the same time. When the Apple logo appears, release both buttons.
• On an iPad with Face ID: Press and quickly release the volume up button, press and quickly release the volume down button, then press and hold the top button. When the Apple logo appears, release the button.

When you call Apple again, since you got no satisfaction from initial support employees, you can ask to have your iPad battery snd other iPad issues escalated to more senior support staff.

I recommend calling Apple again and have this issue escalated up the support employee ladder.

Good Luck!

You're welcome and thanks. I hope the force restart helps you.