Potty Training Tips

I have 4 year old twins girls, I introduced their potty when they turned 2 and it has been a struggle to get them interested in potty training. Both are non-verbal. One of my twins seems a little more interested than the other. She has pooped and peed in the potty multiple times; but we are struggling to get them in a routine for potty while homeschooling. I feel like my daughter that has shown some interest seems ready, but it’s getting the idea of her knowing she’s gone that it doesn’t feel right; or telling me she needs to go potty. Every other milestone (aside from using utensils) has been an absolute breeze for both of them.

Does anyone have any suggestions? I feel like we may train one at a time and hopefully her sister will become more interested once her sister is trained. 😅