Losing a ton of weight, but having sugar craving + improved my smoking daily

Hey, guys. I was wondering what are the side effects of Mounjaro? I started with 2.5mg, now I am 5mg (current pen 3/4). I noticed that, since I started to lose weight a few weeks ago + went to 5mg per week, I am smoking a lot more than before. Is it because I don't eat as much and my brain is trying to give me dopamine from the cigarette?
Question 2! How to deal with sugar cravings? I don't take soda, even Diet soda, and any kind of sugar (cakes, puddings, general sugar) and I am having a lot of craving today. xD