What is PE? Physical education?
HPS Pythia and Shannon talked about iron in this thread:
https://ancient-forums.com/viewtopic.php?f=17&t=900
I don't know if what they said applies as much to your diet as much as it does with supplementation, but increasing your iron intake may not be enough if the extra iron is getting nullified by other nutrients in your diet.
However, I do know that the body keeps a reserve of iron in the liver, and the bone marrow uses it to replenish your blood. If you're iron-deficient now, and you increase your iron intake, you might not see the effects of it right away because your body is using it as soon as it comes in. Demand exceeds supply. Once you meet your momentary needs and your body starts putting some iron away for a rainy day then you're back in business. This means that you'll need to be more patient when you up your iron intake while the demand drops back to normal and your body can start saving any excess.
Also, I think you mentioned in another thread that your particular Saturn placement is bad for your bones. Maybe you should think about doing a working and some research for this, since your marrow produces red blood cells. Shannon has a thread on bones that might be helpful to read.
By the way, did you ever get around to doing a working for your teeth? How'd it go?
I've read the link you provided and HPS Shannon mention of Dr Ron made me go to his website and search up iron supplements, I found this one to be the best choice, what do you think?
https://www.drrons.com/p/221-Spleen-500mg-180-Capsules.aspx
I'm asking because I am not very educated in such things..
Centralforce would be able to tell you more about this than I could. I have no knowledge of TCM/alternative medicine; I only know what I know about this topic because I've had to take care of my parents who were anemic, but it does raise another interesting point about spleen health.
But if you want my uneducated opinion on this supplement, if you have reason to believe that this will be beneficial for you and you don't mind the asking price for something that you're not sure you need then I'd say give it a try. Personally, if what they say in the description about ingesting organ meats is true then I'd rather get them from the butcher, not from a pill bottle. Seems like it would be more economical this way. But then not everybody likes the taste of offal and it lacks the convenience and routine that a pill can offer.
I also feel like they're creating artificial scarcity by specifying that it's an organic spleen harvested from the body of a free-range grass-fed south west Bornean red mountain heifer that was born facing north under a full blue moon, making it seem more exotic than it actually is so they can charge more. Granted, I'm skeptical about this sort of thing, anyway. If the company was local to New Zealand then it'd be more understandable but they're based on the other side of the world, in Connecticut. Buncha marketing wank words, if you ask me.
But yeah, ranting aside, it wouldn't hurt to try. It's hard to say exactly what you should be doing since you don't know what's causing it, the most we can really do without this knowledge outside of workings is throw shit at the wall until we find something that sticks.
As for exercise, I wouldn't recommend cutting it out entirely. Doing cardio for example makes your body more efficient with its blood & oxygen supply along with the limitless other benefits it brings to your physical & mental health and wellbeing. You should ask your doctor about this and figure out what's right for you.