Leaving your magazines loaded won't hurt them. I have some 1911 mags that were given to me by a retired Army Major in the early 1970s. They’ve been loaded constantly since 1972 and they work fine. Sometimes I don't use them for years at a time. They always work and I always reload them and put them away.
We often hear that springs get worn out when mags are loaded and unloaded. I think that’s a firearms "urban legend".
I collect vintage trumpets and cornets. Some of my horns are 90-110 years old. The valve springs on the professional models have been cycled, literally, hundreds of thousands of times. One trumpet, a 1908 King "Master", was owned by a professional jazz player who wore the valves to the point where they leaked badly. When I bought it from him, he told me he'd replaced the felt and cork spacers several times, but the springs were original.
If they made springs that good over a century ago, I wouldn't worry about your magazine springs.