Orajel mouth sore gel and
Orajel mouth sore rinse
I use this every time I bite my lip or tongue & it numbs the pain, and helps heal your tongue.

I've done it in the past and bit of a piece of my tongue what helped me was just ice and it healed in about week a or so

If it helps. I bit my tounge last Thursday. Feels alright now. A little over a week.