What to do when waiting for autism/adhd assessment appointment?

Hi everyone.

Hope you all are well. My name is Vanessa, I'm 19 and two weeks ago, I had my GP appointment where I got asked questions for both autism & adhd. I answered the questions honestly and I got reffered to both autism and adhd assessment waiting line. I know it might take a while to get the assessment appointment date but in the mean time how do I manage when I feel behind in life, unsuccessful and I seem to be struggling with a lot of things all the time. I want to be able to prove people wrong and not be known as the chaotic unorganised person all the time so I want to find ways to get support and coping methods in the meantime. I would appreciate tips if that's okay. Take care everyone. (P.S. I always kinda had a feeling i may have a disability/learning difficulty but now I am pretty certain I just want a diagnosis to confirm it). Thanks guys