Poop and formula.. is this normal?

Bianca • Type 1 diabetic! 💉 Mommy to Aidan Levi 💙🐳 June 15, 2019 💕 10.13.21 💍🎃 TTC little love #2 🥰

So, I had my baby on breast milk, but I’m not supplying enough to keep up with his eating, so he’s been put in formula. He has pooped all day except for his last 2-3 diapers. They were just wet.

My questions are:

1.) is this normal?

And

2.) should I take him to the doctor?

He’s also getting over a cold...