To me it seems your container is too big for the plants and the media maybe too moisture retentive.
I would suggest, start anew, remove all the yellow/dried out leaves. If there is still some left, either water root it for now till it is able to grow new batch of roots or use a much smaller container with drain holes and add a bit more gritty stuff to your media to make it more airy at root zone.
At this time of the year, plant would also appreciate being nearer to a bit more light, since light levels are naturally getting lesser intensity and duration. Can you possibly move them closer to a window where it can "see" the light better.
Typically spider plants handle drier conditions better since they do grow a vibrant cluster of tuberous roots, so it can withstand longer dry out times. But during summer they do enjoy stepped up watering especially if temperature has gone very hot or during cold season if heater is running indoors, ambient conditions go drier fast. But as seasons change, you need to also adjust/lessen watering pace. But do not treat them like cacti, after all they are still tropical plants, that needs moisture at the root zone.
Another way is to do bottom watering where there is a water wick that allows water to moisten the root zone. That also works, that way you can easily see if there is still water in the reservoir below and not be tempted to overwater.
One has to remember though roots need to drink up water, they also need air at the rootzone..too wet and soggy rootzone causes root rot eventually and that ultimately kills the plant.
These are my spider plants. Of course our growing areas are different, but just to give you an idea how I can gauge if my plants need water:
For those outdoors, since we have excessive dry periods, watering spikes helps me in watering them, upside down water bottles. I wait till water is gone in those bottles, before I replenish water.
For those indoors, I use wick watering, and plants are positioned closer to the window, since at this time of the year, light levels are gradually less intense and duration is going shorter. These are baby spider plants I got this late Sept:, positioned by our west facing windows:
Plant needs good air circulation all over. When weather permits it, I open up the windows during the day, but at night time, it is closed since temps outside drop very fast.
If weather does not allow me to open up windows, I would briefly run our ceiling fan, especially if we just replenished water.
Btw, with your plants, no fertilizers for now. It is going into winter anyways and your plant is in stress..so no fertilizer. Hope you can improve the media or adjust your watering method and frequency.
Good luck on your plants.🤞
