I know someone who got a passing score with only 1 month of studying Uworld and FA. But bear in mind, just a pass score for an IMG serves no purpose if he wishes to apply for residency in US.
Yes, you can pass it, but it is unlikely that you would get a high score.
The mbne score itself does not indicate your command of the material, it just reflects the likely score you will get. In this way it could be misleading.
The bars and their length are a better indicators of your command of the material.
This being said if your command of the material is high, then yes you could pass it in a month, but if it is not then you would need more time.