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That is, actually, a close relative called String of Bananas. They will be a little less tolerant of bright light during temperatures above 100 F, but otherwise need bright, direct light for most of the day.

Slow growth will indicate a few things:

This can happen due to low temperatures. They are only hardy in USDA zones 10-11, which means they will not grow well in ambient, indoor temperatures without some help.

I would recommend feeding with a balanced, dilute fertilizer. Apply horticultural lighting (Not LED since they do not produce enough heat.) for most of the day to get the temperatures up.

and make sure that the soil does not remain wet. They like evenly, slightly moist soils with a thorough dry out between waterings. Just don't let them remain bone dry for more than a couple of days.

This article will help you to care for the plant: https://www.gardeningknowhow.com/ornamental/cacti-succulents/string-of-pearls/caring-for-string-of-bananas-plant.htm