girl problems

basically, i like this girl and we’ve been talking for a while. We also do streaks and spam snaps. Im almost always the one to start the conversation tho. She does start the convo sometimes, but i carry it. Lately shes been giving me mixed signals. I dont know if she likes me or not. shes also an introvert so that doesnt help. my friends told me to not text her for a week and see if she texts me first, but if i dont text her first she might think ive lost interest so she wont text me either. What do i do??