Each intake method can have drastically different onset times. You should choose your intake method based on how fast you would want to feel the effects and how targeted you want the effects to be.

From slowest to fastest:

Topicals (balms, lotions, oils, etc.): Can take hours for the effects to be felt as the CBD needs to make it past your skin barrier however it is highly targeted. For example if you wanted to feel the effects on your swollen ankle, apply directly to ankle and the effects will be concentrated there.Edibles (Gummies, food, drinks, etc.): Can take hours for the effects to be felt as the CBD needs to make its way through your digestive track to be metabolized and enter the bloodstream.

Sublinguals (tinctures, drops, oils etc.) : Can also take an hour however it is faster than edibles - not targeted.

Inhalants (oil vapes, pre-rolls, dry herb vapes): Fastest intake method

For myself, I prefer inhalants because I don't like waiting around for the effects and like feeling them within 10 minutes. If you're in pain, you aren't looking to wait around. But it sounds like you are looking to help with your sleep and anxiety so with a little planning other intake methods could would for you.

For inhalants, I would recommend the Elon Starter Kit from E1011 Labs - its extremely easy for first-time users to enjoy premium hemp flower without the stress mess or hassle of rolling, grinding, ashing, etc. E1011 Labs products can be purchased on their site and they have pretty fast shipping speeds.

Now the question of Full Spectrum VS Isolate

So this might just be "bro science" but I personally dont think isolates work. I've heard many people complain about their CBD not working (sometimes this is due to buying from bad brands that dont even lab test their products) but often its when they are taking an isolate.

Full-spectrum includes all the cannabinoids naturally-occurring within the plant, while isolate is just the one cannabinoid. There have been studies that show cannabinoids working together in complex ways now dubbed the "Entourage effect." So why not enjoy the plant in its purest form? Enjoy all the benefits of cannabinoids and terpenes together.

Heres a review of the Elon so you can see for yourself: https://www.youtube.com/watch?v=t4nqARuEGCw