I would talk to the school/ and or your local authority. You may be able to find some information on their respective websites. My understanding is that in some areas where a child is taken out of a school to be home educated there is a cooling off period (not sure if that is the right words or not) whereby your place(s) in a school are held open in case you change your mind.
You might also like to consider flexi- schooling, whereby they have some days at home and some at school. You would definitely need to talk to the school to see whether they would consider this. You would also keep your school place open, if they returned to full time at a later date.