Third trimester weight gain

I just entered my third trimester this week (yay me!) and I have been doing so well not over eating or over indulging myself. But now I am just so damn hungry. Like ridiculously hungry. Usually I snack on fruit (that's my craving) but now it's just not enough. My doctor only wants me to gain 15 more pounds in the next 11 weeks, which I think is doable but I'm so nervous that I'm gonna gain 5 lbs this week alone 😖. Usually if I'm thirsty I'll feel hungry but I'm like drowning myself with all the water I'm drinking. Anybody else dealing with the third trimester munchies? How do you combat it?