The person who has stopped working may still want to hear about the work you care about.

When someone leaves a job, by choice or not, the people around them often stop mentioning work entirely, meaning it kindly. What that silence can create is a second loss: not only the work, but the conversation about it. Interest does not switch off with a schedule. Many people miss being talked to as someone who understands the thing.

Tell them about your week the way you would have before, and let them decide what they want to hear. Ask what they think, because their judgment did not expire. If they would rather talk about something else, they will say so, and you will have offered rather than assumed.