Do you have a garden? If so could you build a run for them so they can go out in that in the day time with plenty of toys etc, Then at night time when you have time for them bring them in?
Also if you allow them to sleep in your room radiator beds are very good for keeping your cat close to you and them feeling safe.
They were your babies remember before your child came along and they wont really understand that they can not have your full attention.
Mine get under my feet all the time if i dont want them to do it i will just close the door to the stairs so i know they can not trip me up.
The only other thing i could suggest would be maybe if they dont have a set area set up one for them in a quiet part of the house and see if this helps, maybe give them an old top of yours to sleep on so they feel close to you still.