Mac Battery has been dropping drastically

Hello everyone,

https://preview.redd.it/t690rwfdonme1.jpg?width=934&format=pjpg&auto=webp&s=758c37ea8fac5bc5db106566641d80e344d56d21

I'm on macbook air M2, and for the past month or so ive been using the macbook almost exclusively plugged into a monitor which also charges the macbook but I use aldente so its capped at 90%. But Ive noticed when I use the macbook on battery for classes the battery's been dropping significantly. I started using the macbook today at 9 am and didnt do anything beyond web browsing nothing intensive right now its 11am and im at 25%
My battery health has been pretty good as well its at 90%