You can use a 3S1P Lixx balance plug.
In essence you need 4 wires, +, -, and 2 signal wires.
Rewire the two servo wires to one plug.
Make a harness with the other plug and 2 servo plugs.
This way you only plug one wire in.
I have done this with a wing that has ailerons and flaps.
I used one plug for ailerons and one for flaps.
I could have gone to a 4S1P or 5S1P and used one plug.
It is a nice clean installation.

Now the down sides.
A lot of extra work now and minimal time savings later.
If you need to change out a servo a lot of extra work.

Good Luck,
KW_Counter