Try not to theorise ahead of your data.

But... When we were similarly summoned (thread)
I did essentially two related things - I thought about how to articulate what we wanted to consider for DS, and why, and I thought about how to explain the steps we'd already taken (so that I had an answer if we were accused of messing DS up by "allowing" him to get ahead).

For us the meeting turned out entirely positive - good luck for yours doing so too!

Email: my username, followed by 2, at google's mail