2nd orchid

[Judy 1990]

hi i bought a mini orchid and it bloomed for a few months and now the flowers all falling off and the the stem is half brown and half green bottom green is it becouse its not getting enough light cos it happend too my 1st orchid last year and now its stem is growing back now still waiting for it to be ready to bloom . And back to the mini orchid i think its the same as the other the way its going down hill i feed it once a week with a lidquid with water mixed with it but i dont put a pencil in to check to see if it needs watering can u please help me out please with this problem and enclosed is some pictures of the 2 orchids hope it is clear for you to see look forward to your advise thanks lisa