FMLA changed mind about when to come back

Do you have official paperwork that states you are allowed the 12 weeks then they can do nothing about it but change the schedule. Work will always be there so when you get a chance for time off never forfeit it again. As a matter of fact if you are not ready now... Will you be ready in one more week. If not then you may be able to go out on stress disability. That is what I had to do. Not only was my boyfriend not helping but I was in pain from a chronic disease I have but I know many nurses who did not have my stressors and it was still granted as they were overwhelmed. I did see a physchiatrist to do this and was out for 45 months