You still have to follow EYFS for him - observation and assessment file - until the end of reception. You have to show how you share your info with his school and how you work together towards the early learning goals.
Absolute farce for a child in reception who, you rightly say, will be tired - especially after school. I didnt have an obs/assessment file for a child who was 5.5 and with me 4 hrs a week - it cost me an outstanding grade
Remember activities are supposed to be child-led - just have a range of activities he can choose from, most of what you already offer will cover all of the areas of learning and development. Don't plan activities as such - unless you will be having him full days in the holidays. I have - sorry had [forgets winding down from cm mode ]- monthly 'themes' and provide learning opportunities around them. Example, October was always Autumn, so we would collect leaves on the way back from school and make collages with them - conker hunting goes down well too. Then we have good old Father Chrismas visiting soon - autumn term is brill .