Low carb covers a fairly wide territory.
I'd go no lower than 2400 calories per day, and would have carbs at no higher than about 200 g/day, which would happen to come out at 33%. So unless your calories are now too low, that would involve reducing carbs at least somewhat.
I would increase fats to about 80 grams per day, and have the remainder as protein.
If cutting carbs yet further, for example to 100 g/day, then fat and/or protein would go up to balance this, with no need for protein to exceed 300 grams.
On cycling carbs, there are two broad ways: One is to have some meals as protein/carb with very little fat, and others as protein/fat with very little carb, and being sparing about having meals which combine all three. This method (which I learned from John Berardi although I've bastardized it here) has among its advantages that meals tend naturally to be calorically reasonable when they are either P/C or P/F. It's the P/C/F meals that very readily become big.
Another approach is the cyclic ketogenic diet in which one or two days per week allow reasonable carbs but the remainder are very low carb.
Both these methods and also the examples written above work very well when followed with care to the diet and training.
I think much of the confusion that often results from diet articles or posts is that often it sounds as if a given, exact way is really the only way or somehow invalidates other ways. In fact, a wide variety of things work well -- and a wide variety of things work very badly! It's more a question of having things working together in a sound way rather than having to hit exact ratios or use any one sole method.