Who do I contact to see where I am on the waiting list for NHS assessment?

Hi I was referred to both ASD and ADHD assessment by HTT and CMHT a few months a go and I don't really know who to contact about seeing how long it might take?

I feel a bit abandoned by my CMHT because I only see them once every 6 months besides my arts therapy after being under more intensive inpatient/HTT care.

I don't really know what's going on with my care because aside from anxiety/depression with eupd traits and cptsd, they pretty much implied autism/ADHD as a primary diagnosis hence the referral but now I'm just a bit lost because I'm waiting for assessment and I'm assuming its going to take a long time due to the waiting lists