Will my battery discharge if I don't drive for more than 2 weeks in winter? Wondering about the timeframe

I bought a 2014 Spark as a used car this past March.
Since then, I haven't driven it much, leading to the first discharge:
- Resolved by calling emergency roadside assistance for a jump-start.
Then, a second discharge occurred:
- Requested service and replaced the battery (around June).
(The previous battery had a manufacture date of around Jan/Feb 2024 written on it).
(I don't remember exactly, but I think it cost around 120,000 KRW).
After that, I've been driving it occasionally,
but I haven't driven it for more than 2 weeks recently,
and now even the smart key isn't working.
Naturally, the engine won't start either.
It's probably discharged, right?
Or could it be something else...?
What kind of timeframe should I expect for this to happen..
I usually try to drive it once a week,
but I forgot recently. Ah...
I guess I'll have to check tomorrow and call for roadside assistance...