[Anonymous]

“Basically all I’m asking for is advice to make sure his murmur stays the way it is or goes away”.

No one can guarantee this. Your best bet is to make an appointment with a specialist.
Take things day by day, he looks good and is responding well to the diet and care you have been providing (from what you describe).

Like I said, in my experience, most murmurs are benign….I have one myself (since I was a kid) it has caused me no problems and I am on no meds because of it. (I had the echo and stress test, blah, blah, blah)