can't purge as well as i used to?

title basically. has anyone else experienced getting... well, worse at purging ig? not that this is something to be proud of, but i used to be really good at purging. i could get everything out super fast, super easy, etc. but now it's a struggle, it takes a lot longer, a lot more effort, (it took me about 6 hours yesterday and i was out of breath and just in so much pain), i'm having a lot more side effects, i can barely finish half the time, i can't get everything out like i used to, i'm constantly having to take breaks, i'm finding myself needing to use 3 fingers instead of 2, and i'm just having a much harder time than usual which is resulting in me being much, much harder on my body in order to purge effectively. is this a sign that i need to take a break and maybe it'll be easier the next time i try (although i am aware that this is a stupid question), or is my body just fighting back/i'm getting used to purging? anyone have experience with this?