It takes about an hour to charge, so I just schedule the same time every day to charge it (after I get home from work, while I eat dinner).

Sure it's one more thing to manage, but having it wake me up with vibrate every morning is worth the small hassle.

Fortunately it doesn't take 6 hours to charge! I'm still not sure where the 18 hour number comes from, I use mine for close to 24 reliably. About 1 hour charging every morning while I'm at my desk not doing much physically anyways is all it takes. Before the WFH times I'd charge it in the morning after it woke me up and maybe in the evening if the charge was below 30% so I'd be certain it would get through the night.

In that case you could probably get away with just charging it for a bit in the evening and a top up in the morning while you get ready and be able to wear it basically all day. It's supposedly 90 minutes to 80% from zero and that should get you to the evening where it'd be good to unplug and unwind for a little bit anyways.