Feeling consistent kicks?

Hello all! FTM here and I am 21w and 5 days with twin girls. I do not have an anterior placenta, just to get that out of the way.

I’ve been feeling kicks since about 18 weeks and have even been able to feel some on the outside too. But it’s not consistent at all - some days I barely feel anything. And twin #2 (ironically the slightly larger of the two) kicks a lot less. So my question is: at what point did you start feeling kicks consistently and do you feel both babies equally? Thank you!