From what I have read, just laying there and listening to sounds/ observing surroundings is enough stimulation for a newborn of that age. You do not want to overstimulate, as this will cause a lot of fussing/crying. I think just wearing the baby around is enough at this age. Maybe some soft singing, or humming, but thats about it. My babes are 4 months and all I do for stimulation is they have just started to grab at things so they lay under the play mat, they get tired of that after 10 mins, and I carry them around and talk to them softly. Sometimes we go outside and just sit, and they watch the things, in silence.
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