To learn writing at this stage, you can start by writing out the chats you had with your language parent or other people. Write from the recording (if you don’t have one, write from memory).
After writing it down, get feedback!
An easy way to do this is just texting with your language parent. Send them a sentence and have them ‘correct’ it in the same natural way as they would while chatting (don’t have them explain grammar rules, since natives often don’t know the ‘why’ of grammar).
If you feel adventurous, you can start texting about new topics, but don’t cheat by using Google translate! Only use and remix words you already learned. Try to describe difficult things in easier words.