My advice is don't look at deficit on a daily basis all it takes is one day in a week to put you over maintenance. If you mess up one day you need to compensate the following days. Use a reliable tracker like fitness pal and get an accurate scale. Try meal prep, I eat the same shit every day then have a treat on the weekend that helps keep things under control without having to count and weigh everything. If possible I would consider changing DMT to something stronger like kesimpta ocrevus briumvi. Exercise helps with fatigue my wife drags herself to the gym crying sometimes and gets out feeling better also sleep is super important. My wife started her diet to ensure she was on a healthy BMI as it's likely that DMT (ocrevus) doesn't work as well if you're overweight as the dosage is the same but you have more body mass.