One thing to remember is that when Maria Montessori started her philosophy it was in a time when nothing was focused on the child. Things have changed a lot now. The main principles of Montessori and embedded in every nursery and reception seeing through the 'development matters' eyfs curriculum, so no need to send children to specialist Montessori nurseries.
Read up about it. Pick the bits you like, ignore the rest. Do what fits a your child. Read up on attachment parenting too, and gentle parenting, and pick the bits you like.
My house is completely geared up to my children in a very Montessori way (even have a doorbell outside at child height). Coat hooks low down, their crockery and cutlery low, water and cups available low down, step stools in the bathroom and loos, clothes, toys etc etc all down low.
Also open cups from 6 months, no sippy cups ( sports bottles for when out and about). Baby led weaning, no spoon feeding, hot water temp set to 60 c so thru can use the hot tap without fear of burning... But I am very attachment parenting too, co sleep, sling wear. I teach my children how to do things for themselves though (and how to do things safely, like use scissors to cut open a packet of crisps of they are too small to pull the bag open).
Also let them self regulate with food once they are capable of serving themselves ( from about 2 yrs they help themselves from food in the middle of the table).
As a parent you can choose what you think will work for you, your children, and fit with your philosophy.