Hi, I have a monstera plant that I purchased in December, not sure how old it is but I've noticed as many as 4-7 leaves have turned yellow. I'm also having issues stabilizing the plant. I've since removed 4 of them but I see 3 more current & forming on the bigger leaves. I am concerned because I'm not sure if lighting is the issue or if it's how I water my plant. I typically place the plant near the window when I go to work then I move it near my closet at night to avoid damage from my central heating info. I've read to water it once a month in the winter but again my water may not be enough(?). I'm not sure. My pot does have a drainage hole or 2 and I spritz the leaves normally. I also changed the pot and noticed that the aerial roots just above the soil formed like a shell around the pot. Sort of like a hat above the roots below the soil. I did my best to loosen the roots below the soil but now it seems this has caused the plant to lean now because it is too heavy. I tried to get the roots flow down in the pot but I guess they've gotten use to that shell under the aerial roots and have grown to that shape very near the top of the pot. This made it hard to add soil below the aerial roots and now that the roots are loosed the top heavy plant raises pulling the "hat" and soil up out of the pot. What should I do once I purchase my moss pole or PVC pipe?

Some photos would help. Overall look of the plant and close up of leaves and stems.

Looks like over watering. That can happen when the soil doesn't drain fast enough so it retains too much water causing root rot. These plants are semi-epiphytes that usually grow up tree trunks. The roots run down the tree trunks and on the ground run through the leaf litter on the surface. In a humid environment the roots are constantly exposed to air and get moisture from the humidity. During heavy rain the water on them is highly oxygenated but drains almost instantly. When kept in soil care needs to be taken that water drains away from the roots fast and that there is air movement amongst them, ie. a very light, aerated soil.

I would move it to a brighter, sunnier location. Only the green sections of each leaf contains chlorophyll, which means that only those sections are carrying out photosynthesis. Those white variegated sections of the leaves do not. This means that only the green sections are supporting the needs of the whole entire leaf. If they're not getting enough sunlight, then they're not producing enough food to support those variegated sections. So they're dying back, rather than trying to sustain the whole entire leaf that is consuming more food than it can produce. Give it more sunlight and it will produce more food for itself.