Tunnel through main building to connected two other to reduce latency.

I have Custom Tunnels from B1 (1.0) to B2(2.0) that is 1ms latency.

I have a custom tunnel from B1 to B3 (3.0) that is 13ms latency.

I have a custom tunnel from B3 to B2 that is a 54ms latency.

I want to send the connection from B3 to B2 through B1 to reduce the latency between these two buildings. I need the latency to be under 20ms.

I created a route forB2 2.0 traffic going to 3.0 to use the tunnel through 1.0

I created a route on B3 for 3.0 traffic going to 2.0 to use the tunnel through 1.0

In the firewall policy on B1 Lan traffic from 2.0 going to 3.0 to go through the 3.0 tunnel and reversed cloned.

I also created a policy on B1 Lan traffic from 3.0 going to 2.0 to go through the 2.0 tunnel and reversed cloned as well.

On B2 and B3 I created the Policies for any Lan going to B2 or B3 to pass through the B1 tunnel and also reversed cloned these two policies.

It didn’t work. What am I missing here?