does anyone else find this with their child? 4 year old ds has just spent 2 weeks being almost perfect, then overnight becomes horrible to be around, shouty, rude, frequently winding up ds2, won't take no for an answer. This will usually last longer than the good times. When he is going through a good patch i am actually slightly anxious about things being bad again, i know i shouldnt feel like this but its only because it always go this way. Any advice/experience welcome!