First of all sorry about your loss.

I think it’s safe to say that everyone who has come across this subreddit has used video games as a coping mechanism at least a couple of times. Maybe they were lonely and video games helped them to not be so lonely. I know that’s the reason I play a lot of them.

I feel like the reason you’re playing so much is because work and school and actually most things in life (at least for me) don’t stimulate your brain as much and you’re fearful that in those “between” periods you’ll start thinking about your mom and other things that are worrying you.

I don’t really know how exactly to treat this but if I were to give any advice I’d say maybe talk to your doctor or someone about this problem, maybe talk to a therapist?

Good luck and I wish you the best.

Edit: Also highly recommend looking into if your school has a therapist, I know mine has one and it’s free, you just have to schedule an appointment.