Russian ministry of finance predicts that the export of oil and gas is going to account for more than 40% of Russia's state budget revenue in 2022 (that's from the 20th of June).
Based on the numbers from January to May 2022 Russia has already earned ~59% of what they expected to earn from oil & gas prices in 2022.
Here's an article that seems to cover a lot of points on gas exports (Carnegie are usually decent)
It will be almost impossible to recoup those losses in short-to-mid perspective. The pipeline to China only can move 38 billion m2 of gas per year while North Stream-1 alone moves more than 59 billion m2. And, obviously, China and India are in a very comfortable position negotiation-wise — Russia has to sell it to them, it simply doesn't have any other options.