Replacing meals with shakes is a definite game changer. Also a really awesome meal replacement shake you should look into is garden of life. I do those for breakfast and lunch with avocadoes/berries/almonds on the side then have a big yummy dinner!!!
ooh avocado is a good idea that shit is fillng as hell and its got MAD protein for MASSIVE GAINS AT THE WEIGHT RACK
Helllll yeaaahhhhhh!!!!!!! IM AN AVOCADO FEINDDD! XD Because I was a vegetarian for so long, I am terrible about cooking meats so avocadoes are my best friend!!! They have a coffee version of one of the garden of life powders which tastes amazing with unsweetened Almond milk too!!! If you are able to keep up a good routine with the meal replacement shakes and avoid fried/processed food for a few weeks, you will be shocked to see how your body reacts and changes. And your wallet wont be empty either because you wont be eating out nearly as much.