Not every conversation has to start with a question. While coloring together it can grow naturally—or everyone can simply be quiet.

Coloring together is low-pressure: no special drawing skill is needed and adults can join in rather than direct. That often changes the mood immediately.
Open questions such as ‘What is happening in your picture?’ invite imagination without testing it. Silence is welcome too; the sound of pencils can be enough.
Separate pages and one shared pencil pot give siblings room for their own choices while still sharing the table.