Help! At witts end with sons behaviour...

Hi all, hoping you can please help!!
My partner is FIFO (28on/8off) and I work part time, we have a beautiful 2 year old son, the last month though I am at my witts end, he doesn't listen, AT ALL! I feel like all I do is yell!
I have tried it all, I have tried being calm, tried making it a game/fun, tried angry voice, tried timeout...nothing seems to get through to this kid!! He is worse with me around, it is all an act for me, but I am just exhausted!! He also doesn't sleep well anymore, takes him 2 hours to have his day time nap, which he definitely needs cause he gets Sooo tired, and at night he wakes screaming and comes into my bed every night, and because I am by myself I let him otherwise I have a sleepless night! All I do is clean, cook, work and yell...I don't know if this is more of a vent or a question, but hoping I'm not alone with this?!