How Often Should Replace Toothbrush

Shame me all you want, but I didn’t know toothbrushes had an actual time limit until recently 😅. I am guilty of keeping the same one wayyy too long… like, if the bristles weren’t falling off, I thought it was fine 🫠. ARREST ME 🚔🚔 Now I’m trying to be better and swap mine every 3 months like