My flat is very noisy, I can hear everything that’s going on upstairs, and unfortunately it’s the same for my downstairs neighbour. I have a 14-month old toddler and my downstairs neighbours keep complaining that it is too loud. I don’t let him bang the floor or do anything unreasonable, but he’s a toddler and merely him walking/toddling around is too noisy. I have put down foam mats but obviously downstairs still hears him crawling, toddling, falling occasionally, and playing with his toys. I’m getting more and more stressed out about this but I don’t think there’s anything I can do?