Method:

The ethereum.core.fact_event_logs table is used for the required data considering the following conditions:
WHERE CONTRACT_ADDRESS = lower('0xae7ab96520DE3A18E5e111B5EaAb095312D7fE84')
AND event_name = 'Submitted'
AND TX_STATUS='SUCCESS'

Total Volume of ETH that has been staked to Lido

The chart illustrates that since May 14, the Volume of ETH staked with Lido has dropped significantly.

Conclusion

Since May 14, the Volume of ETH staked with Lido has dropped significantly.

The CONTRACT_ADDRESS, mentioned above is for the stETH token. When someone stake an ETH, they receive a stETH token in exchange for the ETH being staked, which has a value approximately equal to the original token and is also exchangeable.

Total Volume of ETH that has been staked to Lido is also mentioned in the text which almost 4.12 M until the time of analyzes.

The value shown can be compared with the reference to determine the accuracy.