What you have are good medications.
Digoxin improves cardiac efficiency and strength of contraction, Metoprolol reduces the peripheral resistance (blood pressure) and hence enhance cardiac output, lasix reduce fluid and volume overload creating an environment for increased cardiac output as well.
Plavix and Aspirin reduce the stickiness of blood to prevent clots and stroke/ heart attacks.
I did not notice an Angiotensin Receptor blocker or ARB, or a potassium replacement.
So I am going top ask you to request your doctor to do your blood electrolytes , because if your potassium is low (it happens while on lasix) Digoxin will work against the heart rather than help it.
ARB's also have a protective effect, and help 'build up' the strenght of the heart
Do not give up before YOUR heart, you NEED to persevere.
Remember you have done just that for 284 continous months. Keep going on.