My son is gong to be 4yrs old this june.he had started going to school and now in Kindergarten1 where his?

teacher had already started teaching how to write the alphabets/number in two line books.now son writes but now very beat.he food in his orals.when ever i ask him to sit for doing his homework he says i dont want to study!But i some how pampers him and tries to make him do,but he does not sit for not more than 5 or 10mts,some if i pamper him like anything he sits.he is not interested in doing home works also when i say abt studying he say i want to play,i dont want to study.how can i make my son interested in his studies and especially in his writing skills?I dont want to beat him or force him,is there ahyway i can make him intrested in his studies and daily routine home works.how should i teach him.i dont want to mak ehim feel tht we are forcing.He is good at school he brings bades as very good.im so happy for him.but i would like to improve little in his habit of not doing his homwroks.how should i improove his writing skills.Please advise.