1 full skein used.
This pattern has been edited by me only.

An update was uploaded Aug. 3/22

Erratum for Aug. 1 version:
Rows 5 & 6 of the pattern should read:

Row 5: k1, p1, k1, p1, k1, kfb, k2tog 9 times, k1, p1, k1, p1.
Row 6: k1, p1, k1, p1, p36, k1, p1, k1, p1.