Well, my suggestion is to give all porn and masturbation a break for a couple of weeks. Kind of reset. If you continue to have a lack of morning erection after that and can not stimulate to erection, then see your doctor. How old are you? Are you under stress? Emotional issues like stress, anxiety, depression can cause erection issues. You could be waking up at different points in the sleep schedule also which impacts morning erection. Are you taking any new medications? That can impact things. If you go to the doctor, they will likely do a full physical to see if there are any health conditions leading to this. Including blood work to check things like testosterone. But most men go through a period of this and it is all fine. So, lay off masturbation and porn, re evaluate and then if it is still a problem, see your doctor.
How's it going? Things any better?