Need Advice

Hi guys am around 15 days without any PMO, I had a flatline I think for last 10-11 days and since yesterday I am getting strong urges and erotic feelings. My morning wood is appearing again but last only 5 mins and is 10-20%. Am 27 and watched porn since early 20s with the choices getting rather bizarre in recent years and experiencing PIED.

Need you guys help and advice in what to expect next. I feel going back to masturbation but still holding on and want to complete the 90 day target (though am very far from it)

Do I expect to have another flatline? or do my erections get harder as time progresses?