K.C.
I had to start time-outs with my youngest daughter much older than two. She had lived with her father for a time and had lost completely all discipline she had been taught when she was 5. So I had to start all over again.
As she was lanky and rubbery, she could wiggle and squeeze out of any space and since all three of the kids were daring me at every turn, the time out was the solution short of beating them until a stick broke (spankings were a joke). They just would laugh at me and run off like wild animals.
So, with my little one, I started a time out for infractions as minor as refusing to come home when told or mouthing off.
I used the old beat-up captain's chairs I had in the kitchen and literally had to sit in front of the chair glaring at her with an unemotional glare and my arms firmly attached to each arm of the chair, basically caging her in to get her to sit still.
I'd use the timer on the stove which helped her to feel that the punishment was going to be exactly what I said and no more. OF course she was responsible for making it more if she refused to behave. Swinging arms around and knocking things off the kitchen table, moving from the chair (after she would calm down and I'd retreat from my stance) or any other misbehavior would cost her extra seconds or a minute.
It took a couple of months but she finally began to develop self control.
Here's a note for all: If you have any doubts about discipline or the time you spend or its importance, I can tell you from experience how important it is. When my kids lived with their father for a year and a half they lost every trace of discipline. When they came back home they were like wild animals and their self esteem was in the gutter, they felt worthless and felt that they could not accomplish the simplest of tasks and did not have the patience to overcome basic challenges. So discipline is extremely important for not only life skills, but basic self esteem, socialization and problem solving skills.
Thought I'd just mention that. I re-taught my kids, but it was very difficult and I had to undo a lot of patterns of behavior they picked up from living with their father. It also amazed me at how quickly children will pick up habits; they will very quickly. That can be good but it also can work against you!