I'm a single Mum and in my third year of undergrad, on the old loans system. Student loans ARE liveable off, you just have to live very cheaply, I don't drive, don't go abroad (some friends from uni have been 3 times this year!), festivals, shop at topshop, have take- away or blow a huge amount in the student bar (in fact, I don't drink at all). Lots of my friends live with , or get help, from their parents. and/or work. If I didn't have a little one, I'd be working my way through University too.
It's harder for me than other students, at the minute, I've struggled for school uniform and everything, I don't know how I will cope until my next instalment comes from SFE. It's paid way too late.
I leave my house at 6.50am to get my dd to child-minders and me on the bus in time. I have to watch every penny, and never get the holidays that they do- or the rest. I run a house and do everything on my own, as I have no family to help. I also have PTSD.
I get around 4k of student loan, some grant and 80% of childcare paid, I pay the rest myself. I buy books, my laptop, everything... out of my loan. So, the point I'm trying to make is that it is a struggle (hugely!), but do-able. Great, if parents support their kids at uni, but remind them its a privilege, not a right.
And because its my money that I will be paying back, I work hard, and get a first (not boasting there, but that's part of my motivation. I can't stand it when I see other students not turning up, and wasting SFE grants and all that wonderful family support.). So, they need to learn to make their loans last. 20% of mine goes straight on childcare. There's no fall back plan for me, so I try and save where I can. It's really, really hard though.
If, as a parent, you can't afford to support them through uni, they can get a part-time job. Sorry to sound harsh, but this is a learning curve for any student. Money management is part of growing up.