hi guys hopefully somebody can help me

i recently bought a small ruby glow and a clear sky , my clear sky is doing great vines are extending , but my ruby glows leaves are all falling off i have 2 left on their and it looks like some new are growing but the leaves are falling off green, and some tips are drying up . i have both planted beside each other so pretty positive its not the soil water every other day and the soil is moist and very well drained

any help is great

thanks guys