You can file a trespassing report with your local police department and they will forward it to the city or district attorney for review.
However, the fact that you waited two months to pursue this issue will make it clear to both the police and the proescutor's office that you are not truly seeking justice, but instead are trying to misuse the justice system as a tool to settle a urinating contest wuth your neighbor. No one is going to take your complaint seriously and most likely, the prosecutor's office will exercise their discretionary decision making authority tp decline prosecution.
Even had you called the police at the time, all they would have done is asked your neighbor to leave and only arrested him if he had refused their direction.

