My daughter's new iPad 10th gen draining battery rapidly after few weeks of use

last year in September 2024, I brought my daughter a brand new iPad 10th gen 10.9inch.

over the last couple of weeks I’ve noticed the battery has been draining very quickly, her iPad will be fully charged, she will watch TikTok and play Roblox for 3 hours max and it will go flat. She never plays it on charge and always plays it til it’s completely flat. Is this the problem?

It automatically updates so it’s all up to date.

what could be causing this please?

[Re-Titled by Moderator]

Original Title: iPad 10th Gen battery problem