How big are your pots?
I ask because the ones I'm growing right now are flowering in 1.6gal pots and I got behind on calcium so I hit them with 50ppm twice but the refractometer said not good enough so the 3rd watering and 4th were at 85ppm and the refractometer said perfect. So I skipped 2 waterings and the refractometer showed the deficiency creeping back in so then hit them with 50 ppm twice in a row and it was good again.
Since then I use 50ppm dolo water every 2nd watering, BUT, if you are in bigger pots it would be easy to build up an excess as the larger pot will allow more overall calcium in.
If you have a deficiency, which it sounds like you do, then 2 full waterings at 65ppm in a row won't hurt at all. Likely it's not enough yet, or barely, but you need a refractometer to know for sure.
Once you see how the refractometer works you will love it. You can track brix and calcium and if you make a change you know within a few days, or hours in calciums case, if the changes were good, bad, or irrellivant.
As for the tilth returning quickly, calcium is a strong cation. It's actually Ca++. It has extra electrons. It's electric. It's actually an electrolyte. So it works on contact.
So calcium is a nutrient, but as you now see it doubles as a tilth maker. When something directly affects tilth or any other physical aspect of the soil, such as carbon holding water, it's referred to as a soil conditioner.
Most soil conditioners are also nutrients, so if you see a product marketed as a soil conditioner then it usually means it improves tilth or water retention. Don't get confused by thinking "Geez I always thought it was a nutrient". It usually is both, so if you start to make your own soil, knowing that some nutrients do both is a good thing and you should likely include them. Make sense? You will see the term soil conditioner used a lot.
Anyways, the term soil conditioner almost always means better tilth, water retention, or microbial aids such as biochar. It is totally possible to over condition your soil, so tread cautiously, but make sure you get it as right as possible.
As you saw today, one dose had an effect. Overdoing it will also have an effect. You will get the hang of it now that your aware of it, and if you overdo it and fry some leaves, well it's a learning experience
Once you get calcium fixed find a lower dosage and a fequency that works for your pot size and soil mix. The refractometer will guide you there. More lower dosages work better than less but stronger ones.