The cardigan is crochet bottom up.
To get the right size, gauge is extremely important. If you have to many sts on 10 cm you must go up a size in hook or sweater size.
For the smallest size it´s possible to use 3-4 skeins in main color… I just don´t want you to run out… crochet usually eats yarn like crazy!

Pattern has written instructions and charts.