Help Me: Packing for my First Solo Trip

Just a gal traveling the world out of her cute little backpack. See what I am bringing along for my very first solo trip to South America (to the beautiful country of Peru). This is a very realistic packing video (it is a jigsaw puzzle; slowly figuring it out).
Take away some of my packing tips and tricks as I get ready to embark on this 2-3 month journey as a remote worker (nomad) living out of my backpack.
My Go-To Gear:
Backpack: I bought it at REI in 2018 when my brother and I were getting ready for our first backpacking trip through Europe. Since my bag is an old gal, I don't think she is sold anymore. The closest I can find is the 'REI Co-Op Trail 40 Pack - Women's'. I cannot attest to this bag since it is not the same one I own.
Packing Cubes: Also purchased that same day at REI back in 2018. So they are also old wise dudes.
Rubber Bands: I probably took them from my Mom back in 2018 and they have been my travel companion since. Sorry Mom, but thank you for the donation :)
My Handy Dandy Packlist
ES: Daydream - Luwaks
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