Keep on keeping on

I got these pictures of Little Bit recently as he played with his trains and cars with his Mega Blocks:

I must say, that is  a well-constructed bridge. 

So intense! He's even more so when he does his puzzles, and has several that he works on from morning until night. Some are missing letter pieces from being dragged everywhere, and some are covered in peanut butter and oatmeal from being worked during meals. 

My husband and I have a puzzle, too: how can we get him in his crib by ten o'clock? Lately, there have been a lot of ill-timed naps on the couch and many tears as we try to move him to his room.