I didn't bother of him at all as I know he will ask me for help if he can't find the correct piece of puzzle. Surprisingly, my boy managed to place in the puzzle all by himself! Then, he said "yeah....finish!" and started to named all the object on the puzzle as he used to. This is a great growing milestone for him!
Before he started to walk, we put the floor mat in our living room for him to play around. During that time, he had the interest to pull out the shape & alphabet from the floor mat and put them back. I think that was the time he started to get interested playing with puzzle.
I won't not categorise my boy as a "quiet" type. But when come to the time with puzzle, he is able to sit quietly, choose the pieces of puzzle and trying to match each other. I am looking for more puzzle for my little boy from now onwards. Anyone has any recommendations?