As for Tummy time, my MCHN told me at our 4-6 week check up, that 1-2 mins of Tummy time at a go was plenty. It makes them so so tired. Also toys, mobiles etc at such a young age can cause overstimulation and makes it harder to get them to sleep.

Follow bubs lead, she knows what she wants! And for all the advice you get (including mine if you like) just nod and smile sweetly and carry on doing exactly what works for you!