Slow upload speed after upgrading to 2GB/sec and XB8-T modem-Looking for help

I just upgraded my internet speed to 2GB/sec with a stated 217MB/sec upload speed and the XB8-T modem. I have performed about 30 speed tests today, all close to: download 892Mbps and upload 38.9Mbps on a MacBook Pro M1 Max plugged straight into the modem using ethernet. I upgraded both get the higher upload speed for managing cloud backups for a photography business. Over Wifi the upload speed is measuring 23 Mbps. I am looking for some assistance in achieving that higher upload speed or else these upgrades were for naught.