Baby sign

Is anyone planning in doing baby sign language with their baby? We have started some simple signs ,milk, nappy and medicine ( she's in gaviscon) as these are the most relevant to us at the minute. My last baby knew over 200 signs before speech alone took over and it helped so much with communication and lack of frustration, he did his first sign "milk" at 4 months. I was wondering if anyone knows any baby sign companies that use BSL,? The one we used before has sadly closed down. Thank you!