12 week old not pooing

[Gillyweed001]

Hi, wasn't sure where to post this, so sorry if its in the wrong place!

DS has not pooed since Sunday. He is mixed fed. Is this normal? If not, what can I do to encourage him to go, and what do I do if he doesn't?

TIA.

[MrsHoarder]

How much bm vs formula is he getting? ebf babies can go up to a week between poos.

[Gillyweed001]

Mostly formula now. However, sods law, as soon as I posted, within half an hour he had done the business! thank you for replying though.