How do I not zone out when shifting?

Everytime when Im about to go shift and go attempt, halfway there my mind drifts off to something completely random and unrelated and I don't even notice!! It's been bothering me a lot and it's super annoying when visualizing or affirming and stuff. Any suggestions??😓

also btw, I'm an awake shifter. And alunir or shifting guides don't necessarily help me.