Newly hacked 3ds, but after about a week started drifting with the arrow pad?

Hi! I’m not really sure what’s up with this, but it just randomly occurred after I forgot to turn it off overnight when playing to Kai watch,

I’ve seen some other people with similar issues but it’s been D pad drift or C pad drift, but I’ve tested both out and calibrated the D pad.

any help is appreciated. Thanks!