One of the best things I heard recently was an expert on habits explaining how to go about your first day at a new job or a new course of study (or something else that requires you to reset your routine). If you see training and nutrition as something you mean to continue even though you have a new job or a new routine then from DAY 1 you need to structure your day the way you wish to go on.
Many people take the approach of just getting themselves sorted first. Once they get themselves sorted out then they think they will work out how where and how they are going to train. They are content to “eat on the run” (usually pretty badly) at the start because they don’t want to have to worry about food when they are stressing about their new job or their new course.
Sorting out training and nutrition later may never happen. The demands of your new job or your new routine will usually increase as you get further into things and it may become very difficult to work in those training sessions. It may also become low down on your list to fix up your eating.
Much better to figure everything out from the start. Think about what your work/study/new routine day will be and where you will be located. Think about when you will be able to train and when you will be shopping and preparing nutritious meals. Work out a plan for your new life that includes everything that is important to you. FROM DAY 1 do things as you mean to continue.