Need advice on suing someone for murdering my father

My father was murdered almost 2 years ago, and since he was the sole breadwinner in our family, it’s been really hard for us financially trying to stay afloat without him.
We were waiting for the murderer to be sentenced before contacting a lawyer, but he keeps delaying the sentencing, and that’s why we haven’t reached out sooner. Now I’m worried we’ve waited too long and don’t know where to start.
Does anyone know what type of lawyer I would need to contact, since it was intentional I’ve been told maybe a lawyer specializing in accidental death wouldn’t work? I also want to know if we can sue him before he’s sentenced and what steps we should take.
Any advice would genuinely mean a lot to my family. Thank you for reading this.

Location: Toronto area.

Author: Business-Donkey-6630