Charging two separate batteries with the same MPPT

Good morning,
I have a very simple 12-volt system:
an MPPT and an AC-DC charger—both Victron—and a 12V LiFePO4 battery.
Everything is connected to a positive busbar and a negative busbar.
On the battery’s positive terminal, I’ve installed a three-position switch (1-2-OFF) and a few days ago added a second LiFePO4 battery that I can’t connect in parallel.

Using the switch, I can use either battery 1 or battery 2 while keeping them isolated. The problem is how to use the MPPT and battery charger I already have on both batteries.
I’ve identified the following Victron products:
Victron Cyrix-CT
or
ARGOFET 100A
but I’m not sure if they’re suitable for my situation.

Are there other Victron products that allow me to connect an MPPT and an AC-DC charger to charge two separate batteries?
If there are no Victron products available, are there any components or electrical switches that can do this job?
Thank you

use of the Argofet unit is not suitable for charging with an MPPT.

Use the Cyrix relay between the batteries.