Advice on IVI/ICI/Home insemenation???

So I’m not sure which one it is but I am wanting advice on how to do home insemenation. My husband and I have been trying on and off for about 3 years for baby #2. Long story short I got pregnant with my first in 2013 wasn’t trying. Period were monthly to the T. 4 days but Since having him my periods have like disappeared I RARELY get periods In 2015/16 I was put on famera and provera to start it but it’s like I have to take femara to continuously get my periods monthly. I heard about the old Turkey Baster method / diva cup but idk if there is a certain syringe I need to use or how far up it needs to go? Should I orgasm before inserting? Does the tip of the syringe needs to touch the opening of my cervix? Like I just want just the 411 on this. Sorry I’m desperate. And yes I know I shouldn’t stress about it. But I am very interested in this.