IIRC, when I was trying to mask the sound with the shower I noticed that it's not working when the water is cold or when I'm not comfortably under it. Then I had a few days of road trip without the laptop and noticed improvement when I was driving, sitting up straight.
So I decided to work on this and bought a keyboard and a mouse and made myself a rule that I will always use the laptop with a stand or external display so I don't lean over the laptop and sit straight up the way it is ergonomically recommended, pretty much like it says on articles like this: https://healthandbalance.com.au/workstation-desk-posture-erg...
I also begin doing neck exercises, recommended to me by an orthopedist(I got some neck pain for a few days, the orthopedist gave me a couple of movement I should do regularly to increase the straight of my neck muscles, I will leave links to the leaflets of the movements). I also did the push the chin to push your head back movement because although I didn't have clinically severe situation with my head moving forward I noticed that on my old photos my head wasn't leaning forward that much.
After a week or so after I started sitting right, my tinnitus begin to improve rapidly. I even began sleeping the orthopedically correct way and avoiding any stress positions. After some time I tried experimenting stress positions, like using the laptop the way I used to and the tinnitus returned in full force until I fix the posture and do some massages. After a year or two the tinnitus was almost completely gone and stress positions don't immediately bring it back anymore so I can use laptop again but if I'm not careful and overdo it, get carried away and lean into the screen it returns.
Oh it's nothing formal, I just try to avoid any stress to my spine. That is, I don't sleep in strange positions that I used to sleep and I changed my bed to a stiffer one because the old one was deforming too much by my weight and this was causing my sleeping position to be slightly curved.
I also looked around the internet for recommendations but they all converge the idea that you shouldn't be forcing your spine to stay in a curved position beyond the natural curve for too long.
2) It says this is exercise for strengthening the muscles. Each of these should be repeated 3 times.
a) Put your hands on your forehead, try to move your head forward as you push back against it with your hands. Do this for 10 seconds and release.
b) The same but this time to back
c) The same but to the sides
d) Hold your head with your hands, one on the forehead and one on the back of your head. Try to rotate your head but stop it with your hands, do this for 10 seconds in both directions.
e) You hold your hands in the shown positions and push against, one hand pushes against the other. The illustration is not very clear but basically you start from the lower position and go higher. After the push, you do the same but this time you hold your hands and stretch.
3) Is for preserving your ability to move. You repeat each one 5 times.
a) You look left by rotating your head, wait 3 seconds the look forward. Then do the same to the other direction.
b) You lean your head until your chin touches your chest and wait 3 seconds, then look straight again but don't push it too much. Then the same but to the back.
c) The same idea but to the sides. Try to lean your head until your ear touches your shoulder but don't push it too much.
d) You rotate your head as much as you can, wait 3 seconds and go back. Then to the other direction. Don't push it too much. Do this 3 times but it's not recommended for old people.
e) Lift your shoulders up and try to get them close to each other at the back. Hold 3 seconds, then go back to the starting position. Do this 10 times.
So I decided to work on this and bought a keyboard and a mouse and made myself a rule that I will always use the laptop with a stand or external display so I don't lean over the laptop and sit straight up the way it is ergonomically recommended, pretty much like it says on articles like this: https://healthandbalance.com.au/workstation-desk-posture-erg...
I also begin doing neck exercises, recommended to me by an orthopedist(I got some neck pain for a few days, the orthopedist gave me a couple of movement I should do regularly to increase the straight of my neck muscles, I will leave links to the leaflets of the movements). I also did the push the chin to push your head back movement because although I didn't have clinically severe situation with my head moving forward I noticed that on my old photos my head wasn't leaning forward that much.
After a week or so after I started sitting right, my tinnitus begin to improve rapidly. I even began sleeping the orthopedically correct way and avoiding any stress positions. After some time I tried experimenting stress positions, like using the laptop the way I used to and the tinnitus returned in full force until I fix the posture and do some massages. After a year or two the tinnitus was almost completely gone and stress positions don't immediately bring it back anymore so I can use laptop again but if I'm not careful and overdo it, get carried away and lean into the screen it returns.
the leaflets:
https://imgbb.com/XWnTZVB
https://imgbb.com/r6PBbTK