I’m sorry too - what a stressful experience. For those in a similar situation, as Megabear2 has said, there is a questionnaire on the website now. Log in to your booking, select Before you sail, then scroll across to Onboard needs.
The website states:
This form should be completed by all guests who:
May require assistance with embarkation, disembarkation, or in an unlikely case of emergency evacuation
Have any medical needs that may require special accommodation
Will be bringing medical equipment or mobility devices on board
Have been advised by their travel insurance or doctor to declare their needs to us