Keiki attached to a yellow stem.. should I repot the baby?

[dzchaser]

So the last time I posted here, we had elected to wait until our keikis had bloomed to repot them... shortly after we had removed the baby plants, we had two new ones grow in their place. Thanks to everyone here we have two new plants to take care of at home

Well, now we have two blooming Keiki plants attached to momma plant, but one of the parent stalks is turning yellow... (see below for the attached photos on what they look like...)

We are not sure what to do! Should we repot the keiki before the yellowing reaches it, or wait until the parent stalk turns yellow completely before we detach it? Or should we just wait for the keiki to stop flowering before we replant? We're afraid that the yellowing will impact the new plant that is flowering!

Thanks in advance for any feedback that you can provide!!