No,
Your data is straightforward but the way you are setting it up is not normal if you wish to take advantage of all Excel has to offer you. As I said you are failing to distinguish between the layout of raw data and the end result that you want to see. The two are quite different.
I think you are misunderstanding what's being suggested. I had assumed that when you had week numbers across your columns, e.g 5-8 for Project 2, that 'weeks' meant specific dates i.e. perhaps a week commencing or week ending date, that's why I suggested a Date column. No matter, Where I said have a column for Date before change that to a column labelled Weeks.
So your master database would look like. Once you have this in place then you can quickly analyse with a Pivot Table.
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