Dotpod Max - pods burning quick

I have the Dotpod Max (the one with the colour screen) I use 0.6ohm pods and I was staying on the low end of recommended wattage according to the pod (20.5) airflow at about half. My first pod only lasted around 800 puffs/ 6 days. I started getting really muted flavour and some mild burnt tasting hits.

I use Koil killaz blitz polar 20mg nic salt (60pg/40vg) it's definitely a sweeter juice. I'm curious if I should be using a lower or higher wattage due to the juice I'm using ? Or maybe this juice isn't good for these pods ? I've had issues finding compatibility with other pods before but it's my all time favourite juice.

So far I love everything else about the vape so I'm disappointed in the pod life span so far.