LTE7490-M904 - is it possible to monitor data usage?

Heyho74

I'm using an LTE-7490-M904 with an EE Sim card supplied by Scancom here in the UK. It's a bulk data unlimited usage SIM, which with EE has a fair usage limit of 600gb. I've been averaging around 450-500gb over the past few months with a different provider who did allow monitoring, but whose speeds were often poor.

There is no way of monitoring data usage with the new network or SIM provider.

I have the M904 in bridge mode connected to a TP-Link Archer C2 AC750 router/wireless access point, which has no facility to monitor data usage.

The M904 has a traffic monitoring function, with sent and received data listed in bytes, but over no defined time period.

Any ideas?