2 yr. Poop problem

What helped some mums I know is adding more water, fruits like papaya/pear/prune, and foods with fibre like veggies and oats. Some also switch milk a bit if dairy seems to make it worse. And trying to build a routine like sitting on potty after meals can help train the body too. If it’s still once a week or baby seems to strain/pain, I feel better to check with PD also just to make sure nothing else going on