When you have a short-term goal (less than 2 weeks), a great tool to use in helping you determine what you need to do to accomplish it is the AIM SMART tool.
Wll first of all start a little hard to see how much would be the most your friend can do and then go slowly so that the muscle gets used to fast movement but especially with a correct diet that must follow step by step.
I hope this works for you
It's A because you basically learn like how to be happy if that makes sense