Help me???

So there’s this cute guy at my grocery store. We had two small interactions and the second one he remembered me and said hi. It was only 2 reactions so I have no idea if he’s interested or anything like that haha. How do I go about making him notice me? Eventually I want to make a move somehow giving him my number or getting him to give me his number. I’m super shy. I was thinking of giving his co worker my number to give to him? But I don’t know haha. Any advice or suggestions is appreciated.

Thanks!