Robbery, now in the detention center, can I get a lawyer to reduce my sentence?

It's good that the sentence can't be reduced, but it won't be increased. Only surrender will reduce the sentence. You have absconded, and it's no use asking for a lawyer. The accomplice has been released from prison, which shows that it is not light to sentence robbery according to the criminal law at that time. Ordinary robbery takes three to seven years, robbery with guys hurts people for ten years, robbery with traffic finance takes ten years, and national finance takes ten years to die, so I estimate that this person has started at least seven years, not less than.