spilt milk on macbook air

Hello all, yesterday i spilt chocolate milk on my Macbook Air. I used wipes and paper towel to get the milk off, and googled what i should do. I then held the off button; putting my mac to sleep and had it upside on top of a towel for 24 hours. I’ve just powered it back on now 24 hours later (i’m backing up all my files rn just in case) and noticed immediately the keyboard keys are very stiff and hard to press, so i assume the milk seeped in and has dried up underneath. that is the only problem i am having right now, everything else seems fine but i am yet to test the sound.

I was wondering if there was anywhere to fix my keyboard? Is the damage going to spread further?