I’m sorry you’ve been struggling with nausea but am pleased you & your medical team have worked out a way to manage it.
Yes, it does become easier. The first months can be challenging because your tummy can be quite fussy & your taste buds often change so you’ll take time to discover foods you can enjoy. Plus you’re working out what foods you can eat within your diet. It’s likely you’ll be able to relax your schedule as you progress too.
You do get used to prepping your food & ensuring you meet your goals. You become pretty familiar with the protein, carb, fat, calorie content, etc. of most of what you eat too so that is easier. Though you may find you feel a bit controlled by your diet again when you reach maintenance & you have to increase your calorie intake to stop yourself losing.
I still eat pretty much to a routine. I’m pretty careful about what I eat too & cook almost everything from scratch but that’s my choice. I don’t mind the routine now cause I don’t really have to think about it & it makes grocery shopping a breeze.
Don’t know what your work entails or if your employers know about your surgery but have a chat with them when you return about your need to maintain a schedule of eating, drinking & meds. If you haven’t told them about your surgery you can still tell them about your schedule. They don’t need to know why just that you have a medical condition you are managing. I took up a contract about a month after surgery & they were very supportive. I told them that I had a surgery & there were times I struggled a bit still with my recovery (low blood pressure, low energy). They never asked further questions. I think they thought I’d had some gynaecological related surgery - lol! I had a desk job & it was acceptable for people to eat & drink at their desks.
Giod luck.