Travel from Kyoto to Tokyo to Fujikawaguchiko to Osaka

Hi Daniel-san

Need your advise if worth to purchase the 7-Days JR pass for my travel in Japan?
If purchase the JR pass, I will only activate the JR pass on 8 Jan and 14 Jan when travel back to Osaka.

7 - 11 Jan - Kyoto
11 - 13 Jan - Tokyo
13 - 14 Jan - Fujikawaguchiko
14 - 17 Jan - Osaka

Thanks in advance.

Happy Merry Christmas.

Ray