The great thing about your course is you can do them exactly when and where you like.
If you start today and someone knocks on the door unexpectantly you can walk away and come back at any time in the future that suits you.
When you return, all modules completed up to that point will be shown with a green completed icon. You may need to review / re-sit the last presentation / assessment depending on your progress within that unit. However, you will not be required to start your course again from the beginning.
We are all about empowering our students to succeed in their course, whilst being aware and accommodating of student's professional / family commitments.