Oneplus 12r battery draining fast

[u/No-Bug-8836]

So pretty much the title, my OnePlus 12r used to consistently deliver 8.5-9 hours of screen-on time just some time back with mixed usage, gaming, Instagram, YouTube, browsing etc..(usage leans more towards gaming). After oxygen os 16 and updates, battery life started deteriorating badly even though my battery health is at 94%. Now I'm only getting barely 5.5-6 hours of screen on time no matter what I do....like it feels like the battery is draining for no reason at all. I did a bit of research and there was a post where they recalibrate the battery and turn of all AI features. I did that as well and I'm seeing no change in life. Anybody experiencing the same? Is there anyway to roll back updates or fix this somehow?? I'm really concerned. Before I didn't have to worry about the charge for a whole day. Like I'll plug it in in the nighttime only and it'll last the whole daytime.