Si, you're right about this. No need to rush. Do it at your own pace.
It's good that your older D is there to take care of your younger one. As a mother of a young D, I can never imagine putting my kid with someone she's not familiar with, especially a male at that, so that kind of made me see red.
You can call me Dory/ Grl.
As a wise fish once sang,"Just keep swimming!"
It's no use to go back to yesterday because I was a different person then.