Course 1 vs Level 1 - which? Why? When? What?!

Help! I have slowly worked up to Lesson 6 of Course 1 but am now totally stumped by the speed of the Welsh being spoken. What should I do? Do I need to keep going over the previous lessons until I become more familiar with the patterns…should I switch to the Level 1 I’ve been reading about…or am I simply a hopeless case?
I do think the course is brilliant by the way…just doubting my own ability to pick up a new language. I would like to keep trying though.