Anyone else using the Taking Cara Babies program?

I am struggling with the S in the SITBACK method... 5 mins of screaming is eating at my heart and waking the entire house 🤦🏼‍♀️ LO doesn’t respond until I get to B, but then as soon as the binky comes out he starts screaming again and starting back at S is daunting. We did 2 rounds last night starting at 3 and by the third time he started crying I did the binky pop. LO never fully settled until I gave in and nursed around 5... Are they supposed to go the full 5 mins if they are screaming?