Baby has 4 teeth-Newbie afraid to start BLW

[EJDS]

My 7 month old son is refusing most solids (started some purees and oatmeal at 6 months). I really believe that BLW is the better way to feed my son and I want to start. However, my son has 4 teeth (front upper and front bottom) and when I have tried to give him tastes of my food, he bites off a big chunk. I am fearful that if I hand him a 2 inch piece of food that he might bite off a big chunk and choke. Any advice from experienced mamas?