My aunt’s husband passed away and there is no one to say kadish for him. I volunteered. I am disabled due to a severe stroke 10 years ago. Which kadishes do I say at which tefilot? For how long should I continue?
Thank you for your question.
It is very nice of you to do this chesed for your uncle and whatever you manage to do is tremendous, especially that you are disabled and it is difficult for you.
By mincha and maariv there is only one kaddish that is said by others. By shacharis you can say any one of three kaddeishim, either after aleinu, after ein kelokeinu, of before pesukei dzimra. Of course the more the better, but one of them is enough.
If the minhag in your shul is that only one person says kaddish at a time, once a day is fine.
If you can, it is best to say it until 11 months from the day of burial.