Cuckold in Kenya/ continuation

True story a few names changed for privacy.
My wife had only one boyfriend before we dated as she was only 22 when I married her. So basically she didn't have much experience sexually. Whereas I had a number of girlfriends prior to deciding to marry and settle down.
She gave birth to our only daughter at 26. My wife was not that slim when I married her and after the birth of our daughter she put on some weight. At 43 she is quite voluptuous and curvy with ample breast size. In short she has a womanly body. She is average height for a woman being 5' 4".
I am of average build and height 5' 8". At 56 due to my age and not doing regular exercise I have developed a paunch. I have let myself go a bit though I have recently tried to exercise and eat more healthy. Another thing I have not mentioned is my manhood. It can be described as a bit below average. When I am fully erect it is about 4.5 inches and medium girth. So I can say I am not very well endowed.
As I got into my late 40's and early 50's I began experiencing episodes of ED ( Erectile Dysfunction). I also have not been having regular sex with my wife and there have been periods of weeks without intercourse.
She has been patient and understanding but I have noticed she seems to be disappointed and frustrated.