Be patient. It sometimes takes a full day. This is not a chat room.
The grammar is wrong. The first "am" is the full verb "to be". When you later in the sentence try to reuse it as the auxiliary verb for "am switching", it won't go. Repeating "am" (and putting a period [full stop] at the end) fixes it: "I am currently on student visa but am switching to work visa in due course." I think i