To be honest
@Wilber123 - that sounds like a sure-fire way to get mighty sick of low-carb mighty quickly! The opposite of what you want.
I have done short stints of such measuring - not the different macros and salt and so on - but certainly for calories when on a Very Low Calorie Diet, twice, for two months a-piece. Lots of weighing. I cannot imagine doing that kind of thing outside of a treatment experiment for a limited period, due to its.... how to say...cumbersome time-consuming, anti-pleasure in food (and cooking!) regimented nature of it! That's my thoughts on it in any case.
I have been low-carb or keto eating (depending on how many berries I am eating) for seven and a half years, and after keeping a food journal for maybe a year or two in detail, knowing the carb level of things has become second-nature. Easy-peasy after a while to keep an almost unconscious track without any measuring or looking things up. And of course - eat and meter for checking out different foods' and meals' and drinks' effect on your blood glucose.
If I was doing it again, and low-carbing from the get go, I would buy a wonderful little carb counting book I saw in a book store recently, and learn the carb content of a broad range of foods that way. As it was - Atkins does a great list, and many nutrition count sites online.
And get really good at reading the nutrition label on foods at the store - for the carbohydrate level of course (and reading the ingredients list to make sure the ingredients are as good quality as possible),and not containing added sugar, and if added sugar - the tiniest amount! Ditto on alternative sweeteners and artificial sweeteners.