I am a management graduate who is working in a/an financial/investment company. I intend to pursue ICWA while continuing my job. Can someone please guide me on -

1) How difficult would it be to complete this course for a working professional like me? (Considering the fact that I am not touch with subjects accountancy / taxation since a long time and I was always an average student while pursuing education)
2) I understand that this course demands pursuant to complete certain years of on-job training. However, at the same time it waves off this term if someone has certain years of work experience. Can my work experience be considered for this waver?

Thanks & Regards,