Im really at my wits end with my own son. He will be 3 in January. Not sure if he has a split personality or is bi polar or what, lol.

He can be very loving, and show concern for others, will share, etc one min(hr, day) and then he turns. He went through a biting stage, then seemed to stop, but it has slowly creeped back. He'll also hit or tackle the other boys. For the summer I only have 2 boys in care (and my 2.5mo daughter), one will be 2 in Oct and the other is 4. He will pick on both equally. He has a very strong personality whereas the other two are very timid (for the most part, but have their moments).

I've tried reasoning-as well as you can with a 2.5yo, time outs, separation, shadowing, everything I can think of and nothing seems to work.
I'm afraid that if his behaviour doesn't improve I will lose my dc kids.

Any suggestions???