Sorry to hear your sick, hope you get better soon.
As for the parrot, you really can't untrain them. I have budgies, which can also learn to talk, not all of them but some. My sister would always yell at Buffy (my bird) when he would bite her, which was a lot, she would always say "bad Buffy!". Her bird Arora, who I always considered to be mine because she would never even feed or play with him, but thats besides the point... well he picked up on it and would alwayd be saying "bad Buffy!", then Buffy would peck at him. He used to say other things besides that and would always be chattering away but then one day he just kind of stoped talking, I don't know why, could be because we put a mirror in the cage, I think I read somewhere that mirrors discourage talking because they have something to chirp at. Although, after reading all those bird care books I have decided that they are full of s*** because I swear I do everything they say not to do or your bird will die and have been for the past seven years and Buffy is just fine. Arora died last year, he got really sick right before end of year exams. I miss him.
Anyway, when he swears, just ignore him, don't give him the attention he wants, even if its just to tell him to knock it off. If he sees that saying it won't get your attention then he might stop saying it, its a long shot but might be worth a try.
Also, about the writing, take as long as you need, if someone is going to get upset that your taking too long then its their problem.
Kaitlyn