
As long as normal hygiene is observed there is no need to get paranoid. the fact you worm in whelp will have been a great help and was one of the reasons I did this as when I first bred my kids were small.
For toxacara eggs to become infective they need to mature over about two weeks, usually this happens in the soil, so the biggest danger is from children ingesting them after playing on the ground where dogs have contaminated play areas and they get their hands dirty and put them in their mouths or eat with them without washing first. Even then the chances of the lava migrating to the eye or another location where they will cause serious harm are very small.
Of course such a young child will not be handling the pups or even do anything more than stroke the Mum, so just vacuum and mop floors and wipe surfaces as you would normally.