Q.Ballerina Pea
I planted a ballerina pea a couple of months ago and already the leaves are turning brown. Should I remove it from where it is and replant it in a pot before I lose it altogether. Your help would be much appreciated. It is in a spot on its own in a stoned covered area.

Make sure the soil is well draining and that your are irrigating regularly until the shrub is established.
This article will refresh you on the care requirements.
https://www.gardeningknowhow.com/ornamental/shrubs/sweet-pea-shrubs/growing-sweet-pea-shrubs.htm