I memo corners-edges, and solve edges-corners. I am not able to do audio pairs (i am able to do 4 at a time). My memory is really bad
I'm also a beginner who does M2 edges with memo corners-edges and execute edges corners and audio memo is EASY, in fact, I can almost say it's not even memorizing.
Here's an example:
JF-NV-CD-BA-WG-D
This is the edges I just got from randomly scrambling the cube, to memo it all I did was:
1) Saw the first letter is J, looked for the second letter and got F, the word JefF easly pops to mind.
2) While repeating the word JefF in my mind I continued to look for the next 2 edges, I got N and V, the word NoVa is the first word I thought about.
3) I say "JefF NoVa" a few times while looking for the next 2 edges, I find C and D and I think of CoDe, now I just repeat JefF NoVa CoDe.
4) The next 2 edges are BA, I personally thought of BAd but there are many options here, BAt, BAll, BAck, BAse, whatever, now I got JefF NoVa CoDe BAd
5) This sentence isn't really hard to remember if you repeat it in your mind, the last few edges are always the hardest but they're not too bad either, now I get WG and I think of WaGe, I add it: JefF NoVa CoDe BAd WaGe
6) now the final letter is D, you can make up any word that starts with D or you can just simply remember that after you're done with the edges to do D and then fix parity.
7) Now that I got this long sentence, I repeat it about 2-3 times before I begin solving: JefF NoVa CoDe BAd WaGe D JefF NoVa CoDe BAd WaGe D JefF NoVa CoDe BAd WaGe D
8) I start solving, remember to never stop repeating this sentence while solving and remember to repeat all of it cause I sometimes repeat just the first few words and then the last ones are forgotten very easily.
9) Since in M2 you kinda solve in pairs, you start with the first word, J and F, you solve them, and now your sentence just got shorter: NoVa CoDe BAd WaGe D
10) You solve N and V, your sentence now is just CoDe BAd WaGe D, from this point it becomes VERY EASY, the words will stay in your mind even if you don't say them because of repeating them so many times in your mind before that, and they're very few words too.
11) Just solve CD, it's just BAd WaGe D now, solve B and A, solve W G, solve D, fix parity and try to remember the corner images you memorized a long time ago, because they were images you will remember them well.
The better you get with execution the easier memoing becomes because execution doesn't take any of your attention and focus, the better you get edges will also be faster and corner images will be fresher in your mind so remembering them won't be hard.