mrs-so3003 and I have recently welcomed mini-so3003 into the world

We are both longstanding golds; mrs-so3003 renewed in February and I'll renew in September (only about 30 TPs short, which I'll easily make up before then anyway). Since most of our BA travel (and almost all of mrs-so3003's travel) is for leisure, with the drop in income this year we're likely to use our Avios / 241s etc rather than doing as much revenue travel. I understand BA now offer status hold for 1 year for new parents, and also give 1000 bonus Avios to the new child if added to the household account within 6 months of claiming the status hold. Some questions:
1) Will both mrs-so3003 and I be eligible for status hold for 12 months? (as opposed to just mrs-so3003)
2) If we are both eligible, will they process these as separate applications, ie mrs-so3003 applies now for her status hold while I wait until I renew in September for mine?
3) If I add mini-so3003 to the household account before applying for status hold, will they still credit the 1000 bonus avios? It won't break the bank if they don't, but every little helps

(want to add him to the account to book a short avios trip in the next few weeks)
Thanks in advance for help.