I think the key here is everyone is different. You just have to try and see which method WORKS for you and is most CONVENIENT for you.

The reason for 6 small meals spread out the whole day is to so called "increase" your metabolism. It also helps to reduce the chances for you to over-eat because you are eating constantly throughout the day and you will not really feel that hungry. The problem arises for some when they feel hungry, they tend to go overboard - eat like an elephant which will result in over-eating and subsequently calories intake is higher. Another key point from the fitness industry to eat 6 small meals is to have constant supply of food to feed your muscle which I think is only a myth.

On the other hand, eating one large meal for breakfast and then smaller meal in dinner is another perception that you will be able to burn off those what you ate in the morning (hence you are allowed to eat more in the morning and the food will be burnt off at the remaining of the day; while eat less during night time because if you eat too much then those food will be stored as fat).

I think you will find plenty of reports contradicting each other. Some advocate big dinner while some say 6 small meals is better. I think this is the reality. People like to argue everything and everyone has their own views. So at the end, it is all up to you to try and choose. The best is to choose the one method that is most convenient for you.

Let's say your work life is really busy and you hardly find time to eat in between so it will be a problem for you to have 6 small meals throughout the day. In this case, you can try intermittent fasting or something else which might easier for you to implement.

I never fast before so I cannot comment on that. If you are getting positive result from your fasting, then just keep doing it. If the result is not what you wanted then change another method.

But I have seen a lot of people successfully incorporate fasting. And you can try to look into intermittent fasting by Martin Berkhan. It is slightly different from your fasting method.