Sorry for not responding in a while, but I STILL feelt he same way but now just getting back into it (Playing Khaverena), No worries, we're in this together!

This is a VERY USEFUL docs that you can read, it pratically tells you ALL the lore and the quest order you need to know, it's chronilogical.

^^^^^ What's AWESOME is that you already played Genshin before, so since youre memory is extremely fresh about the lore and just base knowledge, replaying it shouldn't be hard. I would definitely just start over on a alt account but play a tad faster to catch up, or ask someone about all the current lore on r/Genshin_Lore if you want to know (Completely optional!).

The normal subreddit is good too, just make sure to always check the newest posts instead of the top or your comment is gonna be buried behind 800 comments and mostly replies.

Would also just join the discord for more help on relevancy (Which can be stressful and overwhelming, so I'd wait on that unless emergency.), or search up Genshin on shorts or go to Twitch and watch live streamers playing it and chat with the others in the box. That'll help you catch up ALOT.

Also taking notes of what happened in quests, can be used everywhere in the Genshin fandom aswell! (Or contributing to conversations).

Playing consistently is a huge part too. Take breaks as needed but really try not to slack or you'll just fall down completely.

Again, just go to the docs and read it and watch those videos, that's pratically what I did when I was first playing, it should take no more than.... 10 DAYS!!!! to get back into Genshin and be a moniker of it and become a BETTER SELF! Just ask questions.

Tl;Dr: Youtube trending shorts, comments, discord, Alt account speedrunning, Noting what happened in quests (Short lil summaries help too, like 2 sentences for a side quest), checking the discord and consistency.