Employer is forcing to complete notice period even I am not medically fit

I like to work with my previous account during my notice period, but all are forcing to work the current account , kindly help me to release my current account, I have mental effected Reason for Project Release They are given false statement before joining the account , you will be travel to Canada within 2 months but after joining the account they are extended 4 or 6 month and that’s also not yet confirmed ,my Glomo portal request also cancelled due to wrong location , I totally disappointed, because I need money emergency due to my father treatment, so I don’t like to work current account and also In my current account is new from me and also there is no dependency. Note – Already I served 90 days in my previous account with good record and last minutes I was reverted my e-separation due to looking for Canada opportunity but my family situation , so I was canceled my plan and applied e-separation again and during my notice period I like to work with my previous account. Infosys journey I have successfully completed with 1 year in this organization and my old manger ,group manager is happy with my work and I putting lot of effort to delivery on time and client happy with my work.