Great to hear from you again. It’s been ages.
Basically, there is no scientific proof from a Modern scientific perspective that our digestive fire is stronger in the morning. They don’t even understand the concept or have the ability to measure it. All the Eastern Sciences are based on the ‘cognised Wisdom’ of living in tune with the eternal, laws of nature. This is backed up by what is called ‘Time Tested Science’. This is basically the fact that things has been tried and tested (and shown by direct experience & health outcomes to work) for thousand and thousand of years.
The other point to all this, is that I, or those who promote Eastern knowledge, are not trying to convince people based on ‘Scientific fact’. Basically just trying to explain things in such a logical, common sense way, that it resonates with them (intuitively makes sense which some would say is true science) and thus they are motivated to try it for themselves. Trying it for ourselves and seeing if we feel better, is really our own scientific experiment and far quicker and more accurate than waiting for modern science to test it.
Furthermore, in respect to eating at anytime of the day, what theoretically is the time our digestive fire is weaker or stronger is really irrelevant. The real science (or wisdom) is that we should eat according to our appetite. If we/you are hungry in the morning, eat more .. though still according to that/your appetite. If we/you are not hungry, don’t eat so much, if at all.
That is the real simple wisdom. If the body wants food and has the digestive power to process it, we will be hungry, if we are not hungry, we don’t need food and shouldn’t eat (at least so much).
Hope that helps and keep in touch.