My 1 year old's eating issue..

My son only chews his food a couple times before he swallows it. He's had acid reflux since a newborn and this probably doesn't help.. poor guy. Wondering if anyone has some advice on how to teach him to keep chewing, besides by constantly telling him because that's all I know to do.. Luckily he doesn't choke like he used to, he somehow gets through it; which scares me just as much. I just want him to eat comfortably. I can't usually give him a piece of food without him thinking the whole thing should go in his mouth, he only knows to take bites with certain foods. Idk what I'm doing wrong I just wanna fix it. Is t tongue tie?!