Newbie question...2 radios defaulting back 2 two seperate GW

HI.. Strill green around the edges with routing.

I have a ptp link to a client. In my routes I have 0.0.0.0/0 going to gateway 192.168.38.1

I have now installed a second radio receiving another link from NOC with different a .2/29 to it from NOC

What would I do as a route entry to enable these future /29’s and public IPs to default back to the .1/29 of this new card at NoC.

Because even right now if I add all new ip’s and route of new link, they will default there traffic back to NOC via the first link of 38.1. I need traffic to go back to NOC via new link on same board being .1/29

Thx in advance

Please draw a basic diagram and post it here. It is hard to understand your topology and requirements without such drawing.