Is it normal that when i masturbate...

so, i'm a guy, and i masturbate about 3 times a day or more when i get the chance. but lately i've noticed that the first time i orgasm its really strong and it feels great, and i usually cum a lot. the second time it feels good, but not as good as the first time and i won't cum a lot either. And by the 3rd time, when i orgasm i can only feel it a bit, and i don't usually cum. When i wake up the next morning and start jacking off, when i orgasm its just as strong again as it was the day before. I usually jack off, take a break for like 3-5 hours, than do it the second time. is it normal that this happens? is there any way i can make my 2nd, 3rd, 4th etc. orgasm feel just as good as the 1st one?