IMO its not the volumes that count but instead the revenue and since Feb 2022 the price of energy has gone up at least 30% which means that Russia's income from fossil fuels is pretty well constant.
Of course that increase in energy has crueled the West (especially Europe) with inflation (Germany & the UK in recession with France & Italy not far behind.
The price of oil above started to climb a year before the invasion when Russia started to amass troops on the Ukraine border....see above)
