Struggling with an overactive appetite

Since giving birth my appetite is drastically different. I only breastfed for a month or two but I find myself so much hungrier than I ever have been. Baby is 8 months now. Before I got pregnant I was 5'6 120 pounds and preferred to lightly graze and have dinner as my main meal. I could also put down any kind of junk and my weight wouldn't budge nor would I bloat. But now I find myself itching for the next meal and can put down three heavy meals a day. I eat more than my 6'1 180 pound husband. I'm 140 pounds now and that's not a bad weight to be at by any means but the weight gain has been slow and steady and I don't know how to stop. A lot of my family started skinny and got heavy after giving birth and I don't want to fall down that pipeline.