Change in preferences & behavioural

I realised that ever since Dillion hit the half-way mark to 2year old..there had been some changes in his food preferences and his behavioural. Coupled with his molar eruptions, Terrible 2 Syndrome.. yada yada.. It been a hell of time with him, understanding his needs, wants, whine, tantrums..

Food preferences
I'm disappointed that my once non-fussy boy has start to show dislike for some food like for instance:
Cheese, tomatoes and apple slices (he is ok with pureed apple)
In order to let him have added calcium, i had to add cheese into his oatmeal with pureed apple or spread jam over the cheese cube on his bread.

Eating habit
Recently, D been eating much lesser. Sometimes he only manage to finish half a bowl or porridge and will spit out when he is full instead of clamming his mouth like he used to.
And is driving me up the wall because its messy.. I hope that this is poor appetite due to teething.

Potty training
D starting to protest when i bring him to his potty during diaper change. He cried, struggled.. simply refused to sit. He will only do so when I catch him in better mood.

Refusal
He shake his head whenever we say Bath time, wash face, brush teeth.. He will whine and we have to everything fast. And he will cling on to us during shower which puzzled us as he used to love bathing.

Possession of things
He wants to grab hold of things he sees and refused to get distracted by other stuffs. He ends up throwing tantrums and won't stop crying until he gets it.

Sleepless nights
D been waking up crying for past few nights due to teething and making us so zombified every morning due to lack of sleep. And its always a guessing game on whom he wants us to carry. If he prefer Daddy then he would not allow mummy to take over and vice versa.

We hope this is just a phase and once all his teeth are out, our lives will be back to normal.
Dealing and handling a child's tantrums and meltdowns is a test of our patient and a learning experience for us.
We have scolded, beat his hands, let him cry it out for we hope that we can get the Terrible Two syndrome over .. but I read that we still have to deal with Terrible Three! *GOOD GRIEF*