I did used to masturbate a lot, sometimes 2 or 3 times a day, occasionally 2 in a row, and my previous wife was aware, in our early days encouraged it and would watch, join in, encourage etc.
As a switch in the alternative lifestyle I was also her Dom and I think that helped as I wasn't discouraged.
In the latter years of our marriage however things changed, for reasons to be talked about elsewhere as it's off topic.
It ended with me being placed in chastity to stop me from being able to masturbate, I would be released occasionally, but set very tight time limits, often not even being able to sustain an erection, if indeed I actually achieved one, let alone cum.
I now have a new girlfriend who is very understanding, as to this day, those experiences have destroyed my confidence, both with masturbating and actual penetrative sex.
I don't live with my new partner, and have opportunity to masturbate again as and when almost, but find I need to look at controlling porn just to get enough of an erection to try.
So, don't have schedules, do it when you want, and as often as you want, because restrictions can really mess with your head.