SSL VPN - Split Tunnelling with exceptions

Hi everybody, I have a question about a technical feasibility on the Fortigate 600D range. I have a client who owns among other things a Fortigate 600D to go out on the Internet. From their personal home, users connect in SSL VPN via the Forti client with the "Split Tunneling" mode enabled on the Firewall to avoid cluttering the network and exit on the Internet via their local gateway (at home) and not the VPN-SSL of the company. It works very well, my client will just want to make a change to that. He would like for only 3 Internet links (http or https) to exit via the SSL VPN and to squeeze the "Split Tunneling" but only for these 3 Internet links. (3 public IP addresses). Thank you very much for the answer you can give me.