Q.impatiens plants
I have an impatiens plant that is losing leaves. It has been blooming for 3 months. I was wondering if I would be okay to cut the stems back.

Most people grow Impatiens as an annual plant.
Taking cuttings from the plants is a great way to continue to enjoy these plants.
Here are some links to help you.
https://www.gardeningknowhow.com/ornamental/flowers/impatiens/impatiens-rooting.htm
https://www.gardeningknowhow.com/ornamental/flowers/impatiens/growing-impatiens-flowers.htm
https://www.gardeningknowhow.com/ornamental/flowers/impatiens/impatiens-problems.htm