Thank you for clarifying that. First, it is important to understand that no one, other than a court of law, can tell you whether or not a particular non-compete agreement will be enforceable. That is because the law of non-competes is extremely complex and fact specific. In Florida, there is actually a statute, which you can see at the following link: http://www.leg.state.fl.us/Statutes/index.cfm?App_mode=Display_Statute&Search_String=&URL=0500-0599/0542/Sections/0542.335.html
As mentioned, there are many factors that go into to deciding whether or not a non-compete is enforceable. It is true that a non-compete might be less likely to be enforceable if the employee has not had enough time to develop the Company knowledge and business relationships that the non-compete is intended to protect. However, there is nothing in the statute or case law that sets out what is a reasonable time for the employee to have worked to deem a non-compete unenforceable.
You will want to read the statute, which is lengthy, and then if you still want to go forward with your job move, you will need to either negotiate a release of your non-compete with your employer or hire a local employment law attorney to file a petition with a court to have your non-compete declared unenforceable. If you don't take that step, then you will be on the defense and your employer, once you leave, could not only file suit for violation of the non-compete, but also obtain an injunction keeping you from working for another employer that arguably falls within the non-compete. That really isn't a position you want to be in, thus my recommendations for your options.
Please feel free to ask for clarification if needed. If none is needed, then if you could take a moment to leave a positive rating in the box above, I will receive credit for assisting you today. Thank you