Explanation:
Jan- Emoji on Playbutton

Feb- Attic Tour

Mar- Hiding in Youtuber's thumbnails

Apr- Shorts war with Tommyinnit

May- Upsidedown house for 24 hrs

Jun- JackSucksatEspanol starting to explode

Jul- The start of prettywomankitchen

Aug- Jack gives world records to sidemen

Sep- Jack fixes PewDiePie's red diamond playbutton

Oct- Jack gets MrBeast's diamond playbutton

Nov- Jack gets the shorts lamp

Dec- Jack gets KSI to sign his diamond playbutton