Account deficit for first 6 months is like 30 billion. They entered the war with 300b pile available to them.
They used much of that to prop RUB. Between deficit, inability to raise FX on global markets and war spending they got to be starting to run out and fx markets smell it.
Still a while to go tho. Ukraine still has to spend another year or two grinding Russia down.
But Ukraine is supported by half the planet that happens to be the rich half.
Russias hope is that China will bail them out when shit hits the fan.