Dump his girlfriend, spend 500 on foods and treck twice every week to work, if he do all the three i mentioned, your friend will be able to save alot before one month and be able to buy a few sats before the year runs out.

But the problem be say, your friend wan get bitcoin as exit way from his financial inadequacy, but he shouldn't think that way, the best form is for him to first build knowledge needed, for his financial freedom in the end.