Hallo Susan,
in my parish in Germany we have polish Franciscan Brothers and to my last birthday I got as a gift a book about this way from them. The way goes directly or nearby the coast of the Baltic Sea from Lithuania, the Kaliningrad area of Russia through Poland and ends in Rostock/Germany.
The english name of the way is "Pomeranian Way of St. James".
Przewodnik online po Pomorskiej Drodze św. Jakuba. Kup Paszport Pielgrzyma. Forum PDSJ. Aktualności.
www.en.re-create.pl
But there a few other ways in Poland, here is a link:
Strona Stowarzyszenia "Przyjaciele Dróg św. Jakuba w Polsce"
www.camino.net.pl
You can swith the language, but it doesn´t change anything
- you need a polish speaker
Hope I could help you a little bit.
All the best for you
Michael