I changed up my revision tactic for poetry for my Y11 mocks, and it took me from a level 2 (out of 6) to a level 5. Obviously, what helps you revise is personal to you, but I know that I found the amount of poems I had to memorise overwhelming.
I was quite late to start with revision for the mocks so I only had the weekend for Literature revision. So, I made a list of the 5-6 poems that I could compare to all the others, say the most about, or liked, and rewrote my annotations for them clearly and neatly. This helped really understand the poem, and also remember some annotations. Then I picked out my 5 most important (had the most to say about them) quotations from each poems and memorised these.
Additionally, a basic understanding of the context and meaning (possibly some interesting annotations too) of the other poems would help a lot. If you have more time, choose 2 poems and make a bullet point list about similarities and differences. Or, pick a past paper question and - even if it's not in essay form, and just bullet points or sentences - answer it! It really helps some people to plan beforehand, too.
Hope this helps!