Girls, hi! I ran into a problem... the baby doesn't want to play on th…

Girls, hi! I ran into a problem... the baby doesn't want to play on the floor, he always wants hands or breast... I don't even know how to entertain him anymore. It seems like almost 6 months old, but he acts like a 3-month-old. I don't leave him alone for more than a minute at most, but I always talk to him while doing so. I just don't understand what to do, how will he crawl and learn if he's always on my arms? Maybe, of course, there's a developmental leap going on... but somehow I worry that he won't learn anything. When I work with him on exercises, I teach him