This wonderful site has a huge number of free downloadable Japanese garment patterns. This page offers multiple sizes for a jinbei set for kids, men and women.
While I’m not a fan of expending a ton of printer paper on piecing together paper patterns, the site also offers a free cutting layout schema and a diagram that specifies the measurements of each part of the patterns, so you could easily draft one yourself in your size, and adjust the cutting layout for best usage of the fabric.
It offers layout options for three widths of fabric: 90cm, 110cm, and 145cm.
There are also patterns for Hakama (traditional japanese trousers) and jinbaori (traditional over-vest)