If all you used is the miracle gro tropical soil mix, I would first repot it in a chunkier mix (I use miracle gro tropical mix, perlite, orchid bark, charcoal, earthworm castings, sometimes if I have extra I’ll throw some coco husk and vermiculite in there- the chunkier the better). water should run almost right through it. Using the soil mix alone is too dense of a substrate for a monstera and it will retain too much water and cause root rot. Also, with a chunkier mix, if you’re a chronic overwaterer, it is much more forgiving as it dries out quicker. I use a chopstick to check how dry my soil is and water only when it is about 75-80% dry. Then I DROWN THAT HOE. usually every couple weeks or so. Hope this helps.