It is always best to start preparing for trial as early as possible. During preparation, the following are typically covered:
Subpoenas are needed to officially obtain materials that will be useful to your case
Expert reports are especially helpful to disprove wrong assumptions by the prosecution
Alibis should be identified, examined, and organised so notices can be effectively lodged
Other steps that your lawyer will suggest
It is crucial to have a plan and strategy with your defence lawyers. The strategy naturally determines what preparations are necessary for the case. Without preparation, the outcome of your case will likely not be as favourable as when things are thoroughly organised and presented to the court.