First, answer yourself the following question: do you want to defend a diploma that will turn out on your own (counting on “all put a normal assessment”), or is this really important work for you?
Do not forget that at first, our ideas seem to us much more slender than when we see our words on paper. The head should be free – to occupy it with what you are writing right now. Therefore, all thoughts, quotes, plans should be written down as they arise: do not keep in mind what can be in the file.
So, ideally, you already have a ready diploma – even in the form of a draft, a set of working materials. In principle, to bring the product into a commercial form, you need to invest as much time as it does to create it, at least if you are interested in a favorable impression of the commission and a high evaluation.
If you want to defend yourself seriously, then a month and a half before the defense your work should be on the scale between “Everything has already been read and thought over, it only remains to write a clean copy” and “I fully imagine everything that needs to be read and I do not intend to expand this list.
Guru of academic planning teaches that there are two styles of work on the text: “fast and slovenly” and “neat”. I am a categorical supporter of “fast and slovenly”. First, write at least something – literally all the thoughts that you have about the next item of your plan. If you immediately write clean, you will have to constantly shift the pieces of the future diploma and you will not have time to finish everything by the deadline – only not at the level of style and proofreading, but in terms of structure and volume.
Maybe writer paper afraid clean paper?
Write any first paragraph: if it seems unsuitable, edit it or throw it away. But when the first paragraph is written, the second one will be much easier.
You never write from scratch, you always recycle the spare part of one level into the spare part of the next one, always leaning on something. It can be a source read and concluded by you, a studied literature, a plan.