If you don’t mind, I could recommend a few things I did when I did a huge monster declutter, which reduced my stuff by about 50%.
The main thing was getting things moving, so I dedicated a space where everything went as it was declutter, which was like a holding space, and everything in that holding space had to go at a certain point, in my case it was the weekend, when my partner and I distributed things to their places.
Places that things went…
The tip, and into the recycling. There wasn’t a tremendous amount of stuff for that. But there was a bit!
I went on the Oxfam website where you order enormous bags, (free) and then you post them, it explains what they take on their website, if you google donate to Oxfam by post, and then they will send the bags out to you, I would do that sooner rather than later. I packed about five enormous bags full of bits of everything really, good stuff that I knew they would either be able to recycle, or sell.
Clothes went to those clothing banks, if I didn’t think they had much life left in them. Most of those clothing banks, again if you Google, will be sending stuff to be recycled fabric rather than using them as clothes. So don’t be shy about marking up a bag as a rag bag, if you think things are on their last legs.
I then checked out local churches, as a lot of local churches collected quite random things for various charities abroad. One of our local charities collected gardening tools, as well as DIY tools, old and broken mobile phones, and spectacles. Which was a really good way of getting rid of old subscriptions, there was simply just a box in the church at the back, where you could put things. That was really useful.
Then there was of course conventional charity shops.
I know there was also food banks for any food which was in date, and had a value such as excess bags of pasta, or tins, probably a bit less irrelevant.
If you look around your local area, you might find toy banks as well, as well as those book boxes on the corner of the street, where you can put secondhand books.
also, the local tip took a surprising amount of things like DVDs, books, videos, et cetera. So worth scouting your local tip as well.
Our Salvation Army shop also does collection for large items of Furniture, provided they pass by safety et cetera, so that was a good way of getting rid of that. Again that does require a bit of a holding area though!
Final mention was for book donation, I can’t remember which site I used, but all of my books, DVDs and CDs I scanned very easily using an app, and I ended up making about £70, again you boxed stuff up, but it’s free postage, when you get paid really easily.
if you have any higher value of items or shoes, I would use thrift plus as well. You’ll get barely anything back, but again it’s all about putting stuff back into the system for reuse.
I would put your top layer of stuff in these places so it can be reused. And then think of the skip for things which are more like rubbish, or when you get to the very bottom layer.
It takes a bit of organising, but I would do it a bit by bit. And honestly, I can’t recommend the ox farm donation thing highly enough, it was really easy to post and free.
Good luck!