Not getting 2000mbps hardwired

I have 2000mbps subscription according to my bill but I'm getting around 900mbps down and 300 up. These speed are good but if I'm paying for 2000 I'd like to get the speed I'm paying for. I have a Hitron Coda56 modem and Google Nest Pro WiFi 6 as my router. I think the equipment is more than sufficient to handle these speeds. Wondering if it's required to have an official Xfinity gateway to obtain these speeds?