Op, keep it fun and light. He )and you) have no need to rush, school will teach him, but it does help to practice and learn at home too.
I have red words typed up with pictures and laminated (work somewhere it was easy to do this) and put around the house. They are just there, sometimes we play ‘find the word’ game, etc. But having them. Visible does help. Eg in toilet..😀
Use blackboard or whiteboard or paper to practise writing or reading words eg every morning I would write a word and ds would have to copy it and read it, used names of people, pets, easy words to build up confidence. ( he would look every morning for the word, he enjoyed it, we stopped when he wanted to)
We all enjoy doing things we can do, if it’s too hard it’s not fun.
Don’t worry, relax, get phonic books very cheap, playing cards with words, pictures etc
Lots of kids games are about reading, can family or friends with older kids help with second hand books etc? Or get same books school use. Can you read ds books to him? Read daily!
Who is helping you? School will help ds and give advice etc,
Well done for trying, you have done nothing wrong.
Learning to read at 4 or 5 or 9 doesnt mean anything, enjoying learning is a lifelong skill. I love reading but don’t remember at what age I could do it!
Have fun 😀