Update the Osmosis adapter (Osmosis Fees & Issuance Adapter - fees - CryptoStats) to add the oneDayTotalVolumeUSD query (see existing adapters: DEX Volumes Collection | CryptoStats).
Should be a pretty easy update, as the data can be queried directly from the following API: https://api-osmosis.imperator.co/volume/v1/historical/chart.