You would have to move to Italy and live there for a certain number of years. For you it is probably 10 years continuous residency although as your ancestor was Italian it might be much shorter. To go and live there you would need a visa - a work visa or maybe something like an elective visa (private income so you’re not a burden on the sate), or an investor visa (buying residency).

If you were to have a child while there I don’t know what that would mean. It probably means they would be eligible and you would have the right to stay and look after them. But you would need to carefully assess what that would mean for the child’s statehood and identity.

Depends on how committed you are to the change.

Here’s the Reddit sub on the issue of citizenship by ancestry: https://www.reddit.com/r/juresanguinis/

Italy has just changed it’s rules on citizenship. You now need to prove you had an Italian parent or grandparent in order to be eligible. Before, there was no generational cut off.

https://www.reuters.com/world/europe/italy-curbs-citizenship-rules-end-tenuous-descendant-claims-2025-03-28/