Starting solid, no poo poo!

Feeding my 7+mth old purées (sweet potato/pumpkins) once a day, about 1 ounce. 3-4 days out and she hasn’t pooped. Is she constipating? How long can they go without pooping when they’ve started solids? What would you recommend for me to do? (I think seeing the doc/PD is not very necessary)