Based on my experience, it can go more than 2 weeks and even can go as long as a month or so. That happened to me before and I thought that was the first time to saw the fees pump again. But while waiting with that, he can do the tips of the other members telling him to rebroadcast his transaction but based on my experience again, that didn't do much when fees are this high.

Aside from viabtc, you can contact some miners if you know someone to do the confirmation for you but the cons of this is that you're going to pay a fee. If the amount you transferred isn't worth it, yeah it's just best to wait it until it gets confirmed.