To be honest, the intention is a 'test to failure'.
If I put other measures in place to avoid this battery flattening, I'll never find out whether just replacing the battery alone has solved the problem. So the intention is to wait for a failure to happen, or not.
The bad point of this plan is the potential to be left stranded somewhere. The mitigating factor is that it won't be me stranded...
(I am though considering buying a jump start battery. Would be a good thing to own anyway, and the ability of those things for the tiny size is impressive.)
If I put other measures in place to avoid this battery flattening, I'll never find out whether just replacing the battery alone has solved the problem. So the intention is to wait for a failure to happen, or not.
The bad point of this plan is the potential to be left stranded somewhere. The mitigating factor is that it won't be me stranded...

(I am though considering buying a jump start battery. Would be a good thing to own anyway, and the ability of those things for the tiny size is impressive.)