Introducing the discussion over a number of sessions

There is no need to rush the discussion. You can return to it over a number of sessions with permission. For example, you can invite the patient to think about whether weight is something they would like to address in their next session or in a separate appointment. If they are open to this you can then check in at their next consultation whether they have thought any more about it, or if they have any questions they would like to ask you.