Hey guys my Mandeville leaves are turning yellow and dropping. I have had this plant for about a year now and it has not grown that much. In full sun position. Watered every 1 to 2 days in spring and summer.

They need bright, indirect light. Water the plant when the soil is dry to the touch. The yellow leaves can be over or under watering.
I would remove the dichondra, it can choke the roots of your plant. Also clear the dead leaves. You want to soil to be able to dry out between waterings.