Baby chewing on everything

Hello. FTM here. Baby is 3 months old. he is putting everything he comes across in his mouth. While it might be normal for babies to chew on everything when teething, should I be looking out for what he puts in his mouth. 1) Should he be allowed to chew only on organic materials or fabric etc. 2) what about the paint in his toys. 3) There doesn’t seem to be a whole lot of options about organic toys. 4) should I remove things from him if he chews on it.

What are you moms doing about it? Being a FTM I am freaking about it.