Recommendation is every second day. That means one day break in between.
Ultrasonic should never be listened to with headphones. You can damage your ears. This also applies if you listen to the ultrasonic file too loudly through loudspeakers.
Personally, I no longer see any advantage in ultrasonic files. In the past, when you listened all night, it was very practical. Today, the times are extremely short and 15 to 30 minutes every other day shouldn’t be a problem with masked files.
Besides, nowadays it is said that you should start as slowly as possible if you realise that the listening time is too much.
Start slowly and increase until you reach the sweet spot.
A lot has been written about this recently and you can find all the relevant information using the search function. Also how loud you can listen to ultrasonic on loudspeakers, if this is still desired.
A journal is always helpful to record the changes and for later self-reflection.
And i wish you good luck in getting the visa.
--------------from the Mini-Instruction Sheet-------------
If you’re listening to a single Zero Point title, the pattern is exceptionally easy:
Listen to 1-2 loops of the title, then take the next day off. Do this for roughly three weeks / 21
days then take five days off. That’s it. To illustrate:
o Day 1: 1-2 loops
o Day 2: Rest
o Day 3: 1-2 loops
o Day 4: Rest
… and so on. After 21 days, take five days off. If Day 21 is a rest day, you may include that in
your five days off.