Some advice please regarding pip

louise1985

Evening
last year I applied for pip and got awarded standard on both parts with an end date of June 2022 
Over the past month or so my condition has got a lot worse and on the advice of my career I rang Dwp and told them my condition has got a lot worse the chap on the phone was lovely and said he would send me a form out for change of circumstances and it would be with me in the next 7-10 days he also made me aware that reporting any changes could either make my claim go up or I could lose it totally and they may ask me to have another assessment 

my question is how long does the prep was take and what are the chances they will send me for another assessment with only having one in December??

thankyou for reading and hope you have a good evening