/WRK/ - Wagie and Work

Sup, I have a buddy of mine that works with me.
We used to work at this shitty restaurant where we were extremely underpaid, etc etc. You know how that goes.
Anyway, we both ended up getting an extremely good well paying job. Now the company prides itself on its outstanding quality and god labor practices, but, I have been doing really well and excelling and my buddy is not doing so well. we got trained on different shifts. My shift worked really hard to get me where I needed to be as a group and as a unit. I had to change teams I was on several times because of issues with the management but now I am where I need to be and doing well. We are now on the same shift and he is getting trained on this shift. This shift has extremely high production quotas some times 3 or 4x higher than the other shifts and they are all assholes. The guy teaching him is being a prick too and yelling at him, etc etc etc. Well he got a little sick of it today and went and talked to the shift manager and he asked to changed to a different team where he wouldn't be getting constantly yelled at.
Basically the manager told him to fuck himself and that he isn't changing teams. He also told him "yeah we almost canned a guy today" (my friend is unsure if this was a tacit lowkey admission that they are thinking of firing him.) Well, I know from my experience with the shift I got trained on that sounds like a bullshit approach and it sounds like they are not giving him the necessary attention to have him excel at this job. Which isn't easy, btw. He has a family and he is trying really hard to keep his job but he doesn't know what to do.
He asked me for advice and said he was thinking of going above our shift manager and going to his boss or HR. Obviously, I told him I would. I don't like to let them push me around, but, he is worried about it. He doesn't want to loose this job and go back to washing fucking dishes and a restaurant.
I told him if I was him I would wait a week and take he training I could get from the asshole team lead and ignore him being a prick and see how he feels in a week or so. but he retorted with "well I am scared they are going to look for a reason to fire me which makes me want to go to HR first"
I gave him my advice and I don't know what to think of it. What do you guys think? Seriously in need of advice here for my buddy. He's a good dude who is honestly to god for this shitty world and he's just trying to make a living for his family.

Can help please?