Welcome!! And congrats on your new addition
I should let you know there is a rule around here that if you talk about a puppy you HAVE to post pictures of the puppy for us to fawn over

LOL
One thing we did with our pups when they were crazy-teething-pirhanna's is take a towel (NOT a guest towel with embroidery on it

One you don't mind getting chewed) wet it and freeze it. It's crunchy and cool so it's nice on their gums. I've friends who've like those nylabones for teethers too
All toys should be supervised-especially with a puppy-so you can really try anything that's appropriate because you'll be watching him