Watering 3 times per day is... odd. Unless they are seriously root bound that shouldn't be necessary. Anyway, I am not sure there is really a problem, citrus tend to develop s-l-o-w-l-y. If they flower in the winter expect fruit to form in the spring, grow in the summer and ripen in the fall/winter. Some may be a bit faster, but they take their sweet time, even the ones that are sour ;)

I think the photo in your 14:24 post clearly shows serious fertilizing deficiencies by the look of the leaves with green veins but yellow surface. Very few Meyers live their full lifespan because people don't feed and water them properly. To say they are born hungry is putting it mildly! And that must be the smoothest graft line I've ever seen on a Meyer, I'm impressed. I find it hard to believe it was grown commercially from seed, because Meyer seed isn't very viable. The reproduction success rate appears to be approximately -99.9%, based on my own limited experience, LOL (we have had three of them in-ground for the last 10-15 yrs and one is a genuine Meyer seedling). Improved Meyers are a bush, so even when grafted to dwarf tree stock they grow out and around before they grow up. Meyers can form leaves, flowers, buds, and fruit all at the same time (almost continuously, especially as they age) so feeding them adequately is essential for continued success. Citrus fertilizer on a regular schedule is a necessity (as is iron, in either granular or liquid form). But yours is so starved you might want to also help it with a few feedings of properly diluted liquid fish fertilizer, as well. I'd space them out, maybe a 3-gallon bucket of water with the fish fertilizer added, once every three weeks until the rains start in earnest. Even if you save your Meyer, you will NOT get a good crop this winter, or at least at the start of the harvest season. My trees already have a large number of small green lemons formed, which will take a couple of months to ripen. Be patient and when you feed regularly, don't add twice as much thinking it will work twice as fast. Doesn't work that way! Follow the instructions and if you're in Southern CA, keep an eye out for the dreaded Huanglongbing or HLB, previously known as Citrus Greening, disease. Google Images will show you what the leaves/insects look like; there is no cure.

Oftentimes, the damage caused by over watering cannot be 'fixed' by drying the soil out. Planting into a VERY coarse, rapid draining potting mix can go a long ways in preventing problems in the first place, even for those who tend to be chronic over-waterers. LOTS of us are guilty of this at some point, lol! Using a great deal of perlite, bark fines, and/or Turface (for example) insure that you'll have plenty of large pore spaces in your potting mix to promote the essential water drainage and a constant oxygen supply required for healthy root growth within a container. Please know, too, that moisture meters are notoriously inaccurate.

Meyers don't like changes, so if you had it outdoors then moved it indoors, it will drop leaves. Also, those leaves look a bit mottled like spider mites could be a problem. Also, if you look at the plant sideways, it will drop leaves. Folks on citrus forum could probably help you, but they'll probably ask you to show the entire plant.