Same thing for us actually. 20 seconds after month it is a lot!
I would cum just licking her pussy.
And it was always the case, our first sex (and my first sex ever) was with me liking her pussy and cumming.
Now I either have good erection and cum in 1-2 minutes or it is semi-hard/softy unfrotuantely.
These days wife just loves anal so erection must be very good also it requires some preparation like butthole play, ass licking so I do my best at preparing her and rarely fuck for a minute or so. Of course it is not enough and most of the time she does not bother with my dick anymore. So I eat her very well, she says I am best doing this 🙂.
Before confessing us about cuckolding we had tough times now we are both very well. I see her satisfied and love it so I am satisfied too.