Monsteras prefer soil that is lightly moist, and generally like to dry out a little bit between waterings. As epiphytes with aerial roots, they are sensitive to overwatering, so they don't want to sit in soggy soil. Once the top 2 to 4 inches of the soil are dry, your plant might use a drink.
Monstera, and most other foliage plants, need a 3-1-2 N-P-K ratio. This means three parts nitrogen to one part phosphorus to two parts potassium. These three macronutrients contribute to your plant's leaves, stem, and root health, as well as helping with blooming and getting split leaves.
Your Monstera Peru will perform best in bright to medium-bright indirect light. It can tolerate direct morning sun but avoid areas in which it will be exposed to harsh afternoon sun. It can also tolerate low light levels but will exhibit slower, leggy growth.
Normal room temperatures between 60–80 degrees are great for your Monstera Adansonii. It will not tolerate temperatures under 55 degrees or sudden drops in temperature. Avoid cold drafts and direct airflow from heaters in the winter months.
Set the base of the plant into the container so the original soil line on the plant is a touch below where the new line will be. Fill in around the base roots and any aerial roots that reach into the soil. Firm up the potting mix around the stake and use plant ties to attach the stem to the stake.