Mongotop — json equivalent metrics in prometheus using mongodb-exporter

I am running MongoDB-exporter and pushing data to Prometheus by default mongotop metric is disabled in MongoDB-exporter which I have enabled using --collect.topmetrics flag
but enabling this flag is giving fewer metrics and I don’t need those metrics
when I run mongotop – json on mongo node I am getting a couple of metrics that are pretty useful to me (read, write, total time and stuff per dB, collection, etc …)
is there any flag in mongo-exporter that lets me get the get mongotop – json equivalent metrics in Prometheus ( this the exporter