I've organized all the remaining schedule from Asian Games to Worlds.
Asian Games · September 29 - October 2 (Japan)
- September 29-30 — Group Stage
- October 1 — Semifinals
- October 2 — Finals, 3rd/4th Place Match, Awards Ceremony
Demacia Cup Global Invitational (LoL Copa) · October 3-17 (China)
Korea and China's 5th/6th/7th seeds, Europe and North America's 4th/5th seeds, and Pacific and South America's 4th seeds will participate.
- October 3-8 — Group Stage
- October 12-13 — Quarterfinals
- October 14-15 — Semifinals
- October 17 — Finals
Worlds · October 16 - November 15 (USA)
- October 16-19 — Play-In (1 team each from 4 leagues excluding Korea and China, with 1 of those teams advancing to Swiss Stage)
- October 24 - November 1 — Swiss Stage
- November 4-7 — Quarterfinals
- November 8-9 — Semifinals
- November 15 — Finals
Looking at just the dates, the LoL Copa Finals (October 17) and Worlds Play-In (October 16-19) seem to overlap, but since LoL Copa is in China and Worlds is in the USA, the match times don't actually overlap. You can watch both.
From October 3 to November 15, there are barely any days off.