I’m not an expert of any kind, but I have a friend whose daughter spoke the way you’re describing and it ended up having nothing to do with “speech” per se, but rather her ears (who knew!) Come to find out, she wasn’t hearing really well due, I think, to allergies, and it was remedied with tubes. So maybe just have your doc check his ears next time you’re there. Again, I really have no idea about speech, etc., but I wanted to throw this out because I remember so clearly those “nasal” words of this little girl.
Have fun with those first words- and here’s my advise: I always end up telling my parents “guess what so-and-so said today!” and invariably, my dad says “make sure you write it down!” I finally told them, after not keeping up with all the who-said-what’s, that I believe God intended grandparents to be scribes; to write down all the things I tell them my kids say. So now it’s their job LOL!
Blessings