Have a read of IPSEA and SOSSEN’s websites. That will give you an understanding of what needs to be in a draft. The SN and SEN boards on here are helpful and worth reading.
Go through all the reports. Highlight all DS’s special educational needs in one colour and all the provision to meet the needs in another colour. Each need should have corresponding provision.
Then go through the draft and make sure all the highlighted needs are in B and the highlighted provision is in F. Make a note of anything the LA have omitted from the draft, any needs without corresponding provision, any woolly and vague wording, and anything the reports have failed to include.
When you come across vague and woolly wording, check the reports to see if they are woolly and vague or if the LA has watered down provision. If the reports are vague and woolly, ask the LA to go back to the report writer(s) to make the reports detailed, specified and quantified. If the reports are vague and woolly the EHCP will be too. If the LA has watered down provision, make sure to request the LA sticks to the wording in the reports.
Then make sure any health or social care provision that educates or trains is in F. For example, LAs like to put therapies like SALT and OT in G (health care provision) when it belongs in F.
However, don’t get drawn into a prolonged back and forth with the LA that further delays finalising. Push the LA to finalise and appeal. Ultimately, you may have to appeal if you are wanting a good EOTAS package and a prolonged back and forth is unlikely to solve that.
SOSSEN do a paid for draft checking service if that is something you are interested in.