Internet Failover through IPSec over MPLS

Hello Guys

I need some help here, and I’m hacking My brain to fins a solution.

I recently purchased 2 appliances for our company with model XG 210.

My environment is simple, but I would like to avoid lost internet  access for My users.

Main Site

192.168.0.0/24

Default Gateway - 192.168.0.1/24

Port2 - INTERNET   - VPN IPSec with Branch Office

Port3 - PRIVATE MPLS - VPN IPSec with Branch Office Redundant

Branch Site

192.168.1.0/24

Default Gateway - 192.168.1.1/24

Port2 - INTERNET - VPN IPSec with Main Office

Port3 - PRIVATE MPLS - VPN IPSec with Main Office Redundant

Basically

Is is possible to route internet traffic from Main Office to Branch Office Internet gateway through VPN tunnels, probably MPLS, because Internet is of Port2 is .

Thanks