It seems quite likely that it is a bad idea.
But Sekhmet hasn't consulted anyone who's convinced her that it's a bad idea beforehand, and Osa thinks it's an okay idea, if a little strange.
So they'll just have to find out by doing it!
This is sufficient.

The life in the cocoon is in a deep sleep, hibernating until it has been delivered. No dreams, it is there to be noticed, but that is all.