Q.Growing Mint
I bought my mint plant in January, but nowadays I noticed that the plants are slightly drooping and the leaves turn a slight yellow. However, the stem is still green and they don’t seem to be wilting.

It can be difficult to get enough sunlight to your indoor plants.
Choose a south facing window and make sure the soil is well draining.
Here is a link with more information.
https://www.gardeningknowhow.com/edible/herbs/mint/growing-mint-indoors.htm