Getting further, need your guidance.

I've been using my aneros massager for 4 days - totally new to butt stuff. (Thats it!). Over those 4 days, I've done probably 8 sessions of 45 mins-90 mins. I'm looking for help moving forward.

What I'm doing:

Following the do nothing approach. I literally lay there as relaxed as possible on my back with knees bent, sometimes on the side as well. After insertion I squeeze a few times (both PC and Anus), then I just lay. I will sometimes put a very (5%) light pc contraction, growing it to maybe 20%, as slowly as possible, then I let it go in the same manner. We are talking suuuuper slow and super light. This is all I do. If the duration between p-waves seems too long, i'll do 2-3 medium contractions, then the same super long, super slow process.

What I'm experiencing:

P-waves after insertion. I can manifest them by thinking about my prostate. full body tingling and a feeling of euphoria at the height of the wave. I can localize the p-wave feeling to any part of my body that I think about. After 3-4 waves I will feel a vibration and mild throbbing in my prostate, and at the height of the wave, my PC and Anus muscle will contract very hard releasing an amazing feeling, sometimes I will get 1-2 of these contractions per wave. Then after a few more waves everything kind of fizzles out.

My question:

What actually happens next in terms of a prostate orgasm?

Is the contraction I'm experience actually a mini-O, or what is supposed to happen next?

How do I get past this point as I'm stuck here? Any tips to prevent things from fizzling out as I described?

Thanks in advance for the guidance, gonna do another post about my experience right now.