Good point. It means that they've still got the reserves to fund this. For the moment.
I would love to know how much they have left and how much it costs them each day.
I think they still have over half.
They will keep going if they think Ukraine might fall or if they think the West will give up on them. If they believed that Ukraine could manage another 5 years, then suddenly they'd realise they're throwing good money after bad. Then they may as well give in.
The West needs to increase support and make it clear we will never give up on Ukraine.