I recently came across another way to pray chaplets. An old prayer, they are called 'novena chaplets'.
The way to pray them is '3 sets of 3'. Hail Mary, Our Father and Glory Be on each set of 3. On the medal, pray to St. Agatha and the Sacred Heart for intercession.
St. Agatha is patron asint for breast cancer, nursing and infertility.
Her feast day is February 5.