food intake?

I go to a military academy and I only get fed three times a day(reakfast, lunch, and diiner). Is this going to hinder my gains? And if so is there any supplement, shake, etc. that I could takeas a meal replacement, to give me a total of 4 or 5 meals a day?
Thanx for any help

get a high calorie whey protein powder .

just make the most out of your 3 meals, eat until you cant swallow another bite bro.