I had no problems beating that part... it doesn't need to be nerfed.
The thing with nerfing it is that these are two of the first levels in the whole game, so they're kind of SUPPOSED to be easy. In the full game, the levels will get a lot harder later on, and there will either be a New Game Plus mode or just a difficulty selection to make the game harder for those that want it.
Don't worry; I like challenge in my games, too. But I also want a large amount of players of all skill levels to be able to play it.