This kid is 13 months and still has the hardest times with actual foods! He's got 5 teeth and only…

This kid is 13 months and still has the hardest times with actual foods! He's got 5 teeth and only eats cheerios and puffs without gagging and choking. Everything else, including stage 3 purees he just gags and chokes. I got small little bites of banana down him after several gags and lots of fighting and some strawberries the same way...but he's allergic apparently -_-

Any tips? Encouragements?