@Bitstuck1 the content of the EHCP is based on the evidence. This is why evidence is so important. If the evidence on paper doesn’t match the reality of the child and their needs, then the EHCP isn’t going to match reality either. The EHCP needs to accurately describe needs and the provision required. Any proposed amendments need to be rooted in the evidence. Your situation is also why it is important to appeal B&F as well as I. Section I is the logical conclusion of B&F. B + F = I.
You will need evidence for it but you could propose an amendment to something like “X is increasing experiencing overwhelm and emotional dysregulation. This manifests itself verbally and physical. X can be volatile and explosive. This can lead to X lashing out, hitting other pupils or staff, shouting, screaming &/or throwing things (you can also insert other behaviours here if relevant e.g. swearing, kicking, biting, hair-pulling, head-butting, head-banging) on a daily (or whatever frequency is relevant) basis during which he can injure himself or others.” You can then go on to say, “Following these instances, DS experiences [exhaustion, remorse, anxiety, shame] (insert whatever is appropriate).” Obviously delete anything that isn’t relevant to DS.
Alternatively, although not everyone likes the VCB phrasing, you could pre-fix the existing sentence with ‘X displays violent and challenging behaviour (if he does, obviously). He can…’ VCB wouldn’t be used to describe someone who taps others. Having said that, the sentence you say is in the EHCP is unlikely to be used for DC who taps others. The level of provision will also vary depending on the needs described.
The write the last two paragraphs with the caveat that I haven’t seen the evidence or DS so may not be appropriate for DS.
Risk assessments, safety plans and trauma informed PBS plans can form part of the evidence and be listed in K. Do you have any of those? If not, you should so speak to the school. Trauma informed PBS plans aren’t (or at least shouldn’t if written correctly) anything like the PBS plans of old, which aren't ND-affirming, that spring to mind for most when someone says PBS.
You can propose amendments via the WD process. You don’t need the LA to agree to your proposed amendments before proposing them in the WD (or at all).
You could use the WD process instead of having an early review. If you want one an early review, you can use IPSEA’s model letter. Although the LA doesn’t have to agree to hold one. Even for an early review, you will still need evidence to support amendments. The review should feed into the WD process.