While I don't do all that cause I have no convenient way to, another tip is to charge when it gets down to somewhere's around 3.5V or a bit above, IIRC. Lithium batteries like more frequent shallow charges. For those interested, this is where I would have read that info:
https://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries . (I might stand to use a refresher on that page myself later, but more because I'm an extreme tight-.....
)
I really wish one could set chargers for lower top-voltage cutoffs, though. I have one (Litokala 500) that seems to stop at 4.22, which is a bit high for my comfort. But that charger is a really nice one because it does all 3 major chemistries.
Interestingly (or not), being able to fix my own mods was a
MAJOR contributor to my deciding to take on electronics engineering as an additional new hobby.