G.G.
Hi Jodi. I have a 13 month old too and he is doing the exact same thing. Looks like he is two days younger than yours. Anyway. he doesn't think he can have food in his mouth to get a drink so he spits any out and then get s big drink. He also spits out most fruits and lots of veggies. We have just kept giving them and he is finally starting to eat them now.
For snacks we are doing raisins, Cheerioes, crackers, Gerber Yogurt melts, Gerber Fruit strips, cheese to name a few. I was stressed about the calories too but it seems he is doing fine. I always think he should be eating more than he really needs. Also we still give him quite a bit of milk if he doesn't eat well.
He has days where he does very well and other days I feel like he has had nothing at nutritional.
He loves to have a fork in his hand like mommy and daddy and this has helped hi eating a lot. He won't go for the plastic...it has to be the silver tipped with the rubber handles by gerber. He sees our silver and wants the same so we did this. He still eats a lot with his hands but loves to get things on the fork to eat. You might try this as well.
Let me know if you need more ideas. I've tried lots of things. Good luck.