Behavior: Older Child, Graco

Older Child Having Trouble Adjusting

We have an almost 4 year old (high spirited) and now a two week old. I feel like since the new baby has come home, all we do is yell at the the older child. He wants to explore all the new baby stuff (bonucy seat etc). He is big enough to break stuff, so we ask and ask not to touch, and then we yell and do way too many time outs. Does anyone have any advice how to create more positive interactions with him in this adjustment period?