Is it possible to /60 ipv6 block instead of the /64 block?

I have a Hitron Coda-56 and it's only giving my router (Tp-link ER707-M2 so I can do failover to a secondary connection over 5G) a /64 block of ipv6. I have another router (Google Nest Wifi Pro) that give wifi throughout the house. I'd like to get /60 to the TP-link so that it can give a /64 to my wifi router. I can't set the Nest Wifi Pros to bridge mode easily so is there a way to push a bootfile that achieves a /60 block?

I've already configured the ER707-M2 to ask for /60 via Prefix Delegation, but it doesn't seem to be getting it.

I've also tried the unplug everything for 10 minutes thing but still only getting a /64 address for the ER707-M2.