I will not discourage, i hope that it will get better in the future.

The last decent rain fell in October of 2015 , and the summer has not even started (we have
30-35°C every day), the plants planted this year are in poor condition, although irrigated frequently.

Regarding fruits i'm feeding fly larvae:

I'm sorry to spoil the enthusiasm, but it's impossible that this tree is 460 years old.
First, a fig tree doesn't live so long, secondly in winter 1683-84, Thames was completely frozen for three months,
between 1608-95,Thames was frozen 12 times, and even up to 1814, last time.
How can a fig tree pass all of these extreme weather events as well?

Panino is an italian cultivar, only one crop, see photo below.

Panino verde dell'abate ( abbot's green sandwich) is one of the nth fake made-up italian name, 
and it's also ridiculous.

and despite everything, resist.

About 1 km from my orchard there is a row of fig trees. Two of these trees are very big, about 7 meters
tall, with a canopy that covers several square meters.
Probably the trees are 50 years old or more.
Maybe, from the photos, you don't realize the true scale of these ones.


   

I post two pics to let you see the typical habitat of the caprifig fig in my area;
as you can see it grows with the roots in the water (these are small trees, there are huge specimens):

I would try to caprificate my figs, but there aren't still blastophagas in the syconia of the caprifigs.
I checked about twenty caprifig trees, but the pollen isn't yet formed, and neither a wasp.
Maybe it's still too early in my area for caprification? 1st May i've seen millions of wasps out of the mamme, 
but now nothing at all.