If his solicitor didn't even try for bail that is NOT the same as your BF choosing remand instead of bail.
If the solicitor says that the bail conditions would be so difficult that your BF could not cope with them, to me that says that there is a lot to this story you are not telling us.
In a normal case of assult by beating the bail conditions would only be that your BF had to stay away from you until the trial. You are saying that he can not stay somewhere else for 2 weeks so has to go to Jail?
In a case of this type it is VERY rare for the accused to be remanded to prison, that is why I think you are not telling us everything.
You do not need to be summoned to court you are the person who made the complaint in the first place , even though you later changed your mind. So you should have been told from the start that you need to be there.
Yet again you are asking the same question, so here yet again is the answer.
IF YOU REFUSE TO GIVE EVIDENCE YOU CAN BE TREATED AS A HOSTILE WITNESS, THE COURT WILL THINK THAT THE REASON YOU REFUSE TO SPEAK IS THAT YOU ARE TOO SCARED OF HIM TO DARE TO SPEAK!
This will make things worse for your BF.