Obi was used to feasting on smaller, slower, players, in college. Now, he has to deal with players who just as big, and just as fast, if not faster. All rooks go through this, might be worse for Obi because he cant just turn on the jets, and get by defenders (with his stride) like he did in college. Gave him a massive case of indecision. Watching Toppin play is watching someone who didnt know how to deal with the speed of the NBA game.
Last couple of games Obi took the initiative. Trying to create off the dribble.
I said this about Frank when he was a rook, and it applies to Obi as well. The only way he's going to get past the indecision, is to do what he has the last couple of games. Keep taking it to the rim (within the flow of the offense) not worrying about how ugly the takes are. Most players dont immediately look like veteran players. There are growing pains. Cant get past them, if you dont go through them. Cant do that playing passive.
Obi being more assertive is the first step in becoming a legit NBA player. Its anybody's guess how far he will go. If he can keep building on the minor progress he's made lately, Toppin might turn out to be a good pick. Too early to say either way. Many good NBA players looked like bad picks their rookie season.