Need a second opinion

So me and my husband are wanting to go home in a couple months and I decided for his birthday I am going to sell my truck (we only have one vehicle) and let him get what ever truck he wants to get. I only babysit and he is in the military. I told him I would put a minimum of $100 away each week towards our trip and he needs to put away $100 every other week plus whatever else is left at each pay check so we can afford to go home and get his truck...I have been keeping true to what I said I have put away every cent I make towards this trip. Well I found out today he has been going out to eat (even tho I make him a big lunch each night...that he hasn't been eating). Is it fair? He barely put away $100 even tho he could have put an extra $100 away if he wouldn't have been going out to eat.(so he could have put a total of $200 for two weeks away same as me). Is it wrong it irratated me that he is going out buying food not eatin what I pack for him? Like it's a waste of food and a waste of money.