Pregnancy weight gain

I am 26 weeks pregnant with my 3rd child and I’ve gained 30lbs already. I gained 75 with my first and 55 with my second but I ate constantly with them. This time around I am more conscious of what I eat and I am pretty active around my house with cleaning, doing homeschool and running up and down the steps about 10 times a day to take my toddler to the bathroom or to go pee myself. I eat a yogurt and a chocolate milk for breakfast and then a normal lunch and dinner. I serve myself about as much as my 10 year old eats. My calorie intake is anywhere from 1900-2100 calories a day. I don’t have any snacks during the day. Yet I’m still gaining 2-2.5 lbs a week. My husband is concerned that the baby is going to be too big and thinks maybe I need to eat less.

Anyone else not eating a lot but still gaining a lot of weight?