There's a bit of work to be done. Look here to see what I mean.
https://gtmetrix.com/reports/www.sof...ia.it/gtbmDGcQ
Working on fixing that up would be a start.
Try to localize any third party resources if possible. (host it yourself & call from that)
Fix up the redirect issues listed.
Try to keep third party scripts/resources to a minimum.
And the big one that's listed. Do a better job of caching... 3 minutes is pitiful.