It'll just take you a lot of practice writing out the characters (Hanzi) while memorizing the matching pinyin. Eventually you'll mentally picture it every time you say the word. Create yourself flash cards if you don't want to use the tools here on the site. I like using tools to compliment my learning process while using CC101.
This site lets you create your own worksheets. You can save the PDFs and print them on your own.
https://www.purpleculture.net/chinese-practice-sheet/This site has been helping me learn stroke order. They also have audio to help you memorize sound + reading/writing.
http://stroke-order.learningweb.moe.edu.tw/character.doAfter reading more about Zhuyin, I'm going to avoid using it myself. Very few characters from Zhuyin actually match Hanzi, so I'm just going to put more effort into learning actual Hanzi, a bit at a time. It might seem confusing and overwhelming without an alphabet, but overtime we'll learn that certain strokes may correlate with certain sounds. Instead of taking time to learn an alphabet, you're jumping right into learning reading & writing actual words, just in more of a picture form.
Learning with flash cards and hands-on experience by reading and writing will help you train your picture memory, so that you'll remember them in the future. Unlike pop culture's misconception, picture/photographic memory can be trained. Some people have a natural knack for it, others have to train harder. But you can do this!
