In my trip to BC I did not take any of my supplements for the week we were traveling. I did not experience any symptoms of any sort, so all the supplements are good to have, but not absolutely necessary in the short term. Finding what to eat was hard, and usually not satisfying enough. So we bought bags of mixed nuts and ate a lot of that after our meal. In restaurants, fats and protein are very low in quantity, so I did eat a lot of carbs in those days. Again, there is nothing too bad about this short-term. Once we were back here, I returned to my high fat, mid-high protein, low carb diet. 

I suggest that you do not make dramatic changes in your diet. Give yourself time to adapt. I was in OMAD for several years, maintaining a high carb diet, and I still lost a lot of weight. I probably would have lost my weight faster if I had eaten a low carb diet. Nevertheless, I quickly became adapted to OMAD and soon began to increase my workout routine in duration and intensity. Therefore I had no need to change my diet. I know better now and see that I was eating up to 250g of carbs daily. OMAD sure made up for the excess carbohydrate intake.

Halberg, Nils, Morten Henriksen, Nathalie Söderhamn, Bente Stallknecht, Thorkil Ploug, Peter Schjerling, and Flemming Dela. Effect of intermittent fasting and refeeding on insulin action in healthy men. J Appl Physiol 99: 2128–2136, 2005.