I'll attach simple diagram...
From R2, 192.168.3.0/24 should use the FR link and backup PPP. Segments 192.168.1.0 and 192.168.2.0 will use PPP and backup FR.
PPP uses static routes while FR is BGP routes.
any idea how to achieve this or any routing config?
route-map, prefix-list, floating static routes command ???