How to continue learning Latin

Tldr: need recommendations for a latin textbook that a semi-beginner can teach themselves with.

Hi everyone! I want to look for a way to continue learning Latin over summer break to prepare for the school year. I absolutely love the language and Roman culture. In my school, I was taught using Ecce Romani I, but I am wondering if I should continue learning from that book without a proper teacher. Could anyone please recommend me a textbook that a semi beginner can teach themselves with?