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There may be pests on the plant. They can make the leaves "drip". These articles are on the pests that can cause that:
https://www.gardeningknowhow.com/plant-problems/pests/homemade-aphid-control-a-natural-way-to-kill-aphids.htm
https://www.gardeningknowhow.com/plant-problems/pests/scale-bug-how-to-control-plant-scale.htm
https://www.gardeningknowhow.com/plant-problems/pests/mealybugs-white-residue-on-plants-leaves.htm

Treat the plant with neem oil to fix the pest issue and any fungal issues that may develop as well. Here is more info: https://www.gardeningknowhow.com/plant-problems/pests/pesticides/neem-oil-uses.htm

Do you water your plant? If, in the 3 months you've had it, you've only watered it 2 or 3 times, it's probably starting to droop from lack of water. However, if you've been watering it once a week or so, it's probably suffering from over-wet roots. If the roots stay too wet, root rot will set in, and you'll probably lose the plant. Everytime, before you water, check the soil moisture in the bottom of the pot. Use a moisture meter, or a thin dowel or kebob skewer. The moisture meter should read almost dry. The dowel between your fingers should feel only barely damp.
When you water, make sure there's a runoff from the drainage holes, so you know the roots have been completely moistened. You can leave the water in the saucer, it should be gone within a couple of days. You don't need to let the Chinese evergreen sit on a wet pebble tray, or worry about misting -- these plants are perfectly happy in any environment you find comfortable. This article will give you some more information: https://www.gardeningknowhow.com/houseplants/chinese-evergreen/chinese-evergreen-plants.htm

You can trim your Chinese Evergreen and actually propagate from those cuttings if you would like.
You could do this with the larger leggy portion of the plant, then separate the smaller plant into a new pot.

https://www.gardeningknowhow.com/houseplants/chinese-evergreen/chinese-evergreen-plants.htm

There can be some stress to plants following repotting.
Make sure that you used a well draining commercial potting soil and pot size was chosen that comfortably held the roots with just an inch extra space.
To large of a container will lead to root rot.

Check the soil before watering. Make sure the top inch or so has dried before watering again.
Chinese Evergreen will also turn yellow if they are too cold.
Here is a link to refresh you on the care requirements.
https://www.gardeningknowhow.com/houseplants/chinese-evergreen/chinese-evergreen-plants.htm

This is normally caused by a drastic change it the plants environment, in this case. Is is close to something that gets chilly, such as an open window at night? Maybe the humidity changed, drastically? Here is an article on their care, which will help you: https://www.gardeningknowhow.com/houseplants/chinese-evergreen/chinese-evergreen-plants.htm

Yellowing tips are usually a sign of overwatering. Can you mix some sand into the potting mix to make it drain better? This article should help
https://www.gardeningknowhow.com/houseplants/chinese-evergreen/chinese-evergreen-plants.htm