Willful premaitated murder is his charge also presuading a witness and murder of his sibling

I am unsure of who "we" is in this question. A person charged with a crime is afforded due process in this country which means that no matter the amount of evidence stacked against him or her, the accused has a right to proceed through the criminal justice process: arraignment, preliminary hearing, pretrial motions, trial, sentencing, appeals. often this requires many court appearances. In this particular case based on the charges I expect there will be many more future court dates.

These are very serious charges, which may even be a death penalty case. In death cases, the prosecution, the defense and the judge are very, very careful about making sure that all of the rules are followed correctly. Sometimes it takes the prosecution a while to decide to change the charges to add the death penalty; there are internal procedures at a prosecutor's office for deciding whether or not to seek the death penalty. Even if this is not a death penalty case, it is not unusual for murder cases to take several months to get to trial.

Call the victim's rights advocate / liaison / advocate at the courthouse where this individual's case is occurring. Pick up a phone.

It takes a long time to resolve such a case. That is why he keep having to go to court.