Read through the documents - at a rough estimate, I'd able to build a functional tool for the cancer screening advice given in the Excel document with 1 day's work (or less).
However, I understand you may have further tweaks & design changes you need to make afterwards. Have builders in this week so it'll be a little spread out, but could work to a definite deadline of end of next weekend.. Happy to talk more about my bid if when you're available.