Strange that this thread is full of people rushing to increase their dose... Why?
Mounjaro works by suppressing appetite. It does not magically dissolve fat, and taking a higher dose will not make you lose weight faster.
Many people in the USA who started Mounjaro long before it was available here, have done their entire journey on the lower and lowest doses. For many people it works just fine.
If your appetite is suppressed so that you can stay in a 500 calorie a day deficit below your TDEE, and you can eat three small but adequate meals a day and feel satisfied after eating them, then it is WORKING. This is what you should be aiming for.
If you feel nauseous, have an upset stomach, or cannot eat at all then you need to ALLOW TIME for your body to adjust to the medication. Each week will be different. For me, 2.5 started working fantastically well only in the 3rd & 4th weeks and I had little appetite suppression until then.
I repeat, taking a higher dose will not make you lose weight faster. The time to move up a dose is when your appetite suppression is no longer working, or if you are one of the very few people who have no response at all on a lower dose.
There is a lot of evidence that starving yourself, and using a weight loss drug to help starve yourself simply means that you will put all the weight back on when you stop taking the drug.