672/802

I am an MDS Coordinator in a 16 bed skilled area and 16 bed icf area. The other 124 beds are also skilled certified. I recently got disciplined, written warning, for when I was ill 2 skilled assessments got done late and I could have corrected it. It was explained to me that in my job duties I should have notified the other mds coordinator. I let them know it wasnt acceptable, didnt agree with it as I feel that my direct supervisor should have a plan for coverage when I am off. Now, I am getting pulled into a meeting to complete 672/802 forms and soon to be gone, not soon enough, DON thinks I should be the one updating those every week and not my supervisor; although the other 4 supervisors dont do mds and they are expected to do their own forms. I dont mind helping, but I feel like this will get dumped in my lap when I need to get my assessments done. Does any other mds coordinator out there have to do the 802/672 and have like 4 skilled admits in one day, 2 discharges same day, etc. I am feeling like I am being set up to fail.