What should i give him?

Hi.. my baby is 12 mths 1 week old.. He is healthy.. with proper weight gain n all. However he eats his food only if it is in semi solid form i.e the texture of gerber 2nd stage food. He eats gerber puffs and strawberry cut to small pieces but thats pretty much it. Whatever else i gv him i hv to blend it. otherwise he wont eat it. @day i tried to gv him scrambled eggs and he refused aftr one bite, same thing happnd wn i gv him mashed baked potato mixed wt mozzarella cheese. I had to add milk to it to make it in a paste them he munched down the whole thng. What do i do? Hw do i help him to gt used to diff texture of solid food. Is this common? Which food should i gv him?