Strategies:

Teach them and model keeping an arm's length from other people

Use a hoola hoop to model and practice keeping distance

Using chalk draw around your child's feet. Then stand at a good personal boundary distance and get your child to draw round your feet. When done stand to the side and discuss how far the feet are apart. Practice talking with you each standing inside your circles

Write a social story describing giving information about personal space, how we tolerate people on our sides but not too close when on front or behind. See main website for details and examples of social stories

Use visual cards reminding them of personal space distance:

Personal Space Visual Aid

You may be interested in the following pages: