Also, I can see that your plant is right next to a humidifier, and misting the leaves doesn't raise humidity as much as people think (it's negligible). I would refrain from letting water stay on the leaves, it might lead to fungal problems. In nature, there is a lot of wind and aeration going on, but not as much in our homes 🌪️

You actually do want the soil to dry out with monstera. They grow on trees and are used to dry spells! I don't think this is it but you may be watering it a day or two early

The top layers of the soil dry out a lot faster than the bottom layers. Deepening on how large the pot and volume of soil is, often when your finger comes out dry and you think your plant needs more water, the rest of the soil is still wet and your plant is still trying to absorb that.

I recommend using the "chopstick method" or my personal favourite - "picking up your plant and seeing how light it is".

Chopstick method

Gently stick a chopstick in the soil, being careful not to damage any roots. If it comes out dry, then the soil is dry. If it comes out mostly dry but the bottom 20% has some damp soil sticking to it, then 20% of the soil is still hydrated. From this, you can decide if you want to water your plant depending on what it likes. In this case with your beautifully variegated monstera, as the person before me mentioned, they're adapted to dry spells, so if the chopstick is dry you can wait a few more days before you water.

Picking up your plant and seeing how light it is

Self-explanatory, feel how heavy or light the pot is. I like this because it lets me get to know my plants better, but I also understand that it's not for everybody.

Hope this helps, it sounds like you've placed your monstera in a good spot so it should be happy there :)

Like everyone else said, water less frequent. I water mine every 2 weeks or so. Its also possible that there is water sitting at the bottom of the outer pot so even though there are drainage holes water still has nowhere to go. Its also spring time great time to fertilize. Some places sell slow release pellets that you pit on top of the soil and it fertilizes every time you water. Definitely change the soil too, that'll do a couple of things. Fresh soil will have nutrients, if it's root bound you'll get to detangle the roots and give them room to breather, can even trim some excess roots but if you do that make sure you use sharp cutters and sanitize then with rubbing alcohol prior to use (that goes for any trimming you do). Changing the soil will also let you check for root rot (caused by overwatering). Repotting can be a daunting task, especially if it's a bigger plant but dont be scared, there are a ton of super helpful step by step videos online. A lot of places will also do it for you either for a small fee or in some cases for free if you do it at the same spot where you bought the plant. Not an expert by any means, just some stuff I learned a long the way as a plant owner. Good luck. Hopefully you save it. Worst case scenario take some cuttings of leaves that are still good and try to propagate it.

You should always wait at least a week after bringing a plant home to repot. Let it get over the shock of moving before giving it a shock of repotting

It might be something else.

But as far as repotting as soon as you get it, it depends. It might be fine for a year or two, or it might be completely rootbound in old soil that has no nutrients and just a bunch of nitrogen dumped on top as a bandaid.

I grew up on a farm, not an expert on houseplants. But most of the time if everything else seems fine but leaves are browning, it's because there's too much nitrogen. Especially for houseplants a lot of fertilizer is "slow release", so if that's the problem, repotting is the only fix. All that nitrogen in the soil will just stay there and keep getting picked up by the plant.

As far as I know, repotting "early" can't really backfire either.