Don’t make out every day is the worst day if that’s not the case
Absolutely agree with this.
Tell the truth. If you don't, there's no way of sugarcoating it, it's fraud.
Applying for PIP isn't a walk in the park, but it's important to be truthful. The assessors aren't stupid and if you're found out, you'll lose the PIP and maybe other benefits too. DD had indefinite DLA but we had to go to Tribunal for PIP.
DD's needs can be variable so I outlined that. Ditto at the BB application as its renewal fell before PIP Tribunal. Despite having a BB for many years, the new rules say you need enhanced PIP mobility to qualify. The BB assessor scored her walking ability as less than the ATOS PIP assessor had done, so BB renewal went ahead.
We went to Tribunal (added the BB assessor's documents to our bundle) and DD was awarded enhanced rate for both components with 'it is inappropriate to fix a term' wording which means a light review in 10 years' time. The Judge also said the panel each independently thought that DD should have been awarded the same solely on the evidence I'd submitted initially and it should never have been reconsidered or a Tribunal held and he said if DWP had bothered to attend Tribunal he would have made them apologise to us.
Basically, don't give up, you may be lucky and have a straightforward decision, you may have to go to Tribunal as I did, but do be stoic and plod on if you need to. If the whole system feels as though it's too difficult to carry on, ignore that and keep going 