Totally confused about why I need to wait 3 months for lcwra payment.

Back in Aug 2018 I had to give up my job cause of a back injury. I claimed E.S.A I was also claiming pip. I was getting standard daily living and higher mobility rate. I had my E.S.A assesment after my pip assesment pip awarded me what I just said. However E.S.A awarded me 2 points for my disability and was told to claim J.S.A hardly able to walk I went to the job center with my partner. They took one look at me and told my partner to claim income support as I was in no fit state we also have a child under 1. I did a mandatory reconsideration on E.S.A claim with help from C.A.B. I won the appeal but decided to stay on income support my partner also got carers allowance for me. In January this year we split up I had to claim universal credit I gave them an up to date fit note which states I'm not fit to work I have also had an up to date assesment for pip in February still getting the same amount. Had a health assessment for universal credit which has come back limited capability for work and work related activity so why do I have to wait 3 months for lcwra payment when all the assesments have been done ?I also have other health issues.