Actually I have also recently started giving my 2yo two baths a day too.... one in the (mid) morning and one at night. I have found that with the colder weather and it being a bit muddy outside he needs it. So after he has brekkie we go outside and while I hang the clothes on the line he has a play in some old clothes... they have been getting muddy of late... so I then bring him in (which is when he has been doing his poos) so with all that I have figured a nice warm bath is the way to go. I don't use soap though... MooGoo products here... they are very gentle. Maybe just tell your mum you aren't using soap if she is worried about stripping natural oils. If I don't have any MooGoo on hand I often just pop in a few drops of lavendar oil (it is a natural disinfectant).