I have been through similar, for us it was June 2024 when my Dad died following what should have been a routine procedure, we had the inquest in November 2024, but didn't get the verdict and death certificate until end of Jan/ beginning of Feb 2025, and only had the meeting with PALs in the last few weeks.
Write everything down and take copies of all messages sent to family members about the hospital stay and keep all the correspondence as it proves a timeline about what you have been told and do it as soon as you can so it is all fresh in your mind.
My DSis wrote timelines about what happened when which we then looked at next to the hospital witness statements, and we found these very helpful, especially as every whatsapp messages had dates and times on them when the hospital were fudging details (using "we usually" statements, not "we did"), While we didn't take a barrister in with us, instead we had a friend who volunteers to help families through inquests so had experience and she helped with what we could and couldn't ask, but I was surprised that our GP and the hospital both had legal representation with them and they objected to some of our questions.
DDads cause of deaths was eventually given as 'a rare but known complication of a necessary medical procedure' , and the meeting with PALs got promises of changes being made with how things are managed, so I think we are now at the end of our journey especially as my DM doesn't what to take it any further.
I am so sorry that you are going though this, try talk to someone one step removed from situation so you can get advice.