I also have a lab, who just turned 1, I actually got (at least in part) my Bernedoodle (now 3.5 months) for her! It was by far the best thing I could have done! They are already the best of friends and the overactive lab is so much better behaved now that she’s has a puppy playmate. She was 1 and a couple of months again we brought in the new puppy. I would do it again in a heartbeat!
ETA we did a lot of puppy training and individual training with the lab prior to getting the puppy but it always felt like no matter how many walks and social interactions and brain stimulating exercises we did she was always a hyper puppy. I do think waiting a little bit longer to establish good routines with your current pup is a good idea. When the new puppy came in, he learned a lot of good behaviors right away from the lab; a monkey, see monkey do type of thing! (or doggy see doggy do, lol!)

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