Hello. Thanks for adding the Pune Metro schedule information. Generally, information related to a metro line is included as part of the route relation. So I've gone ahead and moved the `interval` related tags to the route relations in this changeset: https://www.openstreetmap.org/changeset/139602133

I recently came across this site which might be a more convenient method for adding similar public transport schedule information: https://jungle-bus.github.io/Busy-Hours/#/