PIP application - name spelling differences

I have submitted the PIP form for my child which has severe learning disabilities, to replace the DLA that was receiving, as now it is 16 yo.
My child was born in the UK but is an EU citizen and only has passport from the EU country I am from.
My question is this:
The name on the passport has slightly different spelling from the birth certificate / National Insurance / DLA / PIP form submitted. Specifically:
- in the first name, the letter 'c' on birth certificate/PIP, is with 'k' in the passport
- the last name has 's' in the end in the birth certificate/PIP but not in passport.
The child has Indefinite Leave to Remain in the UK (settled status) which matches the spelling in the passport

Should I inform the DWP on this while they are assessing the application?

Thanks in advance

Thank you for your response. Would you expect that I may be penalised for not telling them earlier. Unfortunately I realised after I had submitted.

Submitted a separate thread and it’s not showing?