My baby boy is about to be 3 months , he’s been drooling & having lots of saliva. What could this mean?

Sonia • Mom To 3 Handsome Boys Ethan Liam 2-12-19 & Kaiden Aiden 12-21-20 💙💙💙👶👣 & Gerardo Eli 5-16-22 & Baby On The Way 🤰🏻💖