Best way to lose weight in nursing school

Tori
I have such a busy schedule that lately I can't get my water intake because classes are lik 4 hours long with 10 mins breaks every hour. I recently lost almost 30 pounds I weight 268. But I recently eat out a lot more and I have such a hard time. Can someone give me a way to meal prep excersize and intake water. Plus study and work it's so hard