If a brothers advice is worth anything then read this.

this Ramadan, help your mother as much as possible with the cooking and cleaning and everything.

be patient even in times they are unfair or yell at you.

trust me when I tell you that I have done all types of A'mal and duas and zikrs and crying day and night but never have I found anything that is more effective in answering your duas than helping your mother.

I leave you with this.

The only times I have seen true dreams of the Ahlulbayt in which I actually see their blessed faces were because during that day I did something to help my mother.

I have translated Ayatullah Haqshenas 40 day Ziyarat Ashura method into english and put in in this subreddit years ago and yet The advice in this post is greater than that method in my humble opinion

and don't worry about getting her duas, just do good and help out. God is watching

This is my brotherly advice to you.