About two weeks ago I have put the nest back into the cage. I thought she had properly rested since the last time. It was half a year ago.
The hen was immediately interested and she was checking out the nest. Two days later she started sitting in the nest all day. Less than a week later I saw one egg in it. Now there are at least 3 eggs from what I can see. Hopefully we will see some chicks growing up nicely this time.
It really is up to the budgies. I can only provide them with food, water, veggie, mineral rock, etc. The rest is all up to the couple.