My 7 month old actually listens very well. She's in the stage where hair pulling is her thing. When she goes after our hair or something we just tell her amelia play like a nice grl ande she listens it seems.
Keep being consistent, that is the most important thing. I would do hand taps when my kids were getting into something dangerous, but mainly telling them no in a firm voice and redirecting them to a better option. It takes time but eventually they get it
Completely agree with the 3rd response. I see that amelia will try n pull my hair or my sisters but as soon as gma comes into the room and speaks (she's with most of the day while I work now) she will actually stop and look at her. Ppl think at an age so young they dnt understand or something but they definetly do! Just tell her over and over in a nice soft voice that's what we have done with amelia and they do actually listen and understand that early.