According to Wikipedia median Russian wealth is only a bit over 5 kUSD per person. Ukraine 2.5 kUSD. I haven't been able to find figures for actual savings in Russia but this page https://www.expertmarket.com/credit-card-processing/countrie... gives figures for the countries that save most. Russia is not on the list, but for comparison Norwegians mean annual savings are almost 5 kUSD per year.

So Russians might not be on the edge of starvation but I imagine that a substantial minority could find themselves close to that edge quite quickly.