I have seen some notes at people’s doors before. I think it is only weird if it is done in a weird manner! To do it professionally, type it out and make it look ‘eye catching’ and put a date when it was created and update it regularly. Also take the sign down if the baby is not sleeping or put a sign stating the normal sleeping hours and if the doorknocker can be mindful of this!
Hi, our baby sleeps between 10am and 2pm so please knock gently and we will get there asap.
If you are the Mum or Dad or carer:
– From birth let the baby sleep with normal noise going on and this will help the baby get used to noise at all times including sleep!
– Communicate to people: “Sure that time is fine, but Johnny will be asleep, can you just text me and I will let you in?” thanks.
If you are a visitor:
– take notice of the note on the door and be very considerate. And even if there isn’t a note, but you see a pram and baby type things – knock gently!