One month doesn't make a career. You don't want to put too much stock in a good or bad month, especially in the minors. A player can make an adjustment and turn a bad start around, or he could see the bottom fall out on his game and struggle after a hot start.
The first month of the season gives us an idea of who is going to have a good year and who will struggle, but the rest of the season doesn't always play out that way. That's largely why you don't see many promotions to higher levels during the first month.