Hi, I was on mounjaro for 6 months before getting to approximately my target weight. You have to remember that this is like any diet, if you go back to how you were eating before, you will gain weight again. The drugs help you to lose weight because you dont want to eat as much do would normally. However you have to learn from this experience and understand what it the correct amount and what is a healthy diet.
I did put weight on afterwards (not the full amount at all), mainly because it was 'ooh I can have cake!' and increased the amount of carbs I ate. Eating carbs again after a time of not eating them makes you gain weight really really quickly as you replenish your glycogen stores and the associated water. This also had a bad impact on my blood sugars. I have been able to get this under control and am losing the weight gain without the drugs