I had shortness of breath after dexamethasone.
I don't know about the heart rate variability but I have gotten linear results from Papaya leaf extract, 500 mg pills.
Its been 6 months, and I''m still working on it, though.
First, after 2 months, I added papaya leaf extract to dexamethasone treatment. In fact, the dex was first and I had no platelet response, Then I tried 1 pill a day of papaya leaf extract, and the platelets shot right up.
Then the platelets went down, without papaya leaf extract. My hematologist wanted to try second line drugs, and I let him know I wanted to try just papaya leaf extract. Or, actually, he ordered more dex, to do first. He didn't know what I did earlier. He was only giving me a few days, so I took 16 pills papaya leaf extract, by itself, in 3 days. The platelets went way way up, even past normal.
Then I tried one pill every other day, and that wasn't enough.
Then I tried one pill a day, and that wasn't enough.
Next was 4 pills a day, every 4 days, and that worked a little too well.
Then I tried 4 pills once a week, and that didn't work.
Now, I'm going to try 4 pills every 5 days. So still working on it, after 6 months.
Sorry if this doesn't exactly answer your question, but we've been going at this about the same length of time, and it seems like you're looking for a way of staying out of the hospital. I stay out of the hospital, and away from the steroids with papaya leaf extract. When I first had the bad blood count, it was off to the hospital, but no more, as long as the papaya leaf extract continues to work linearly, and predictably.
As far as when to go for CBC, for me I go every 2 weeks, mostly, until I get things figured out more strategically. It takes a while, for sure.