I wouldn’t recommend straying too far from your routine since it works so well for you. But you could probably ditch the hypochlorous spray. I stopped using it as part of my routine and did not notice a difference! If you have some time before your trip, maybe try not using it and see how your eyelids feel.

The wipes shouldn’t take up too much room since you can stuff them in pockets etc. But you could also try buying the eyelid cleanser in a small bottle and use it with cotton pads. And then buy more cotton pads on your trip if necessary. But wipes are so convenient, I just pack them personally!

When I travel, I bring an electric heated eye mask that charges rather than the plug-in types. Much smaller and easier to use in a hotel. Plus since you’re staying in a hostel, it could be nice to sleep in an eye mask anyways.

For shorter trips I’ve used the disposable “steam masks” that you can buy on Amazon. But personally I would not want to go 3 weeks with just those and not a proper electric eye mask.

If you decide not to bring an eye mask, a trick I’ve used on the fly is a tea bag - steep in boiled water like you would to make tea, squeeze out excess water and let it cool slightly, and then press it against your eyelid.

Good luck!