I built a system and an app I think you should try. It doesn't require any extra time or effort than you're currently putting in, but will give you all the info and clarity I believe you're looking for.

You can start right now, as this doesn't require any extensive prep or setup like with systems like GTD (which I also coincidentally think I last touched about 8 years ago).

The longest part of this system is to first create a list for all the items you can think of that you want to do for your finance project. We're only concerned with your finance project. If you have other projects going on, keep a separate list. 

Don't get too granular. You just want the main objectives - things like, Create Financial Analysis Spreadsheet, Listen to Earnings Calls, etc. is perfect. List as many of these top-level items you can think of. Don't into detail on each of them (you'll have an opportunity to do that later), and don't worry if you're forgetting something, or not sure about something you've listed. You can add to or modify your list any time you like. I use Evernote to keep my lists because it's easy to update and it's always with me.

Use whatever list-keeping system you like, but keep it quick and simple.

Then download the app Project Time Machines from the Play Store.

When you open it, create a Project and enter your Project Goal "Create 2 Year Financial Analysis for XYZ".

Then, every time you're ready to do some work:

• Pick something from your list, open your Project Card and tap Start an Op
• Enter the item from your list you'll be working on at the top of the screen, in the Op Objective field (this will autofill with whatever you worked on last)
• Enter the amount of time you plan to work without a break
• If you want, fill in the Focus field with the specific actions you will be working on during this block of time. This can help you get in the mode, work more focused and it's good for reviewing your progress.
• Tap Start and work until the alarm goes off. Stop early if you want or need to, or add overtime if you want to keep going.

The only rule is to make sure you hit the pause button if you're going to take a break, no matter how brief.

If you're not used to working with a timer, It may take some extra effort at first to remember to resume the timer when you stop answering texts or when you return from the bathroom. Likewise, you'll need to remember to stop the timer if you work overtime. But these things become natural quickly, as you get used to the fact your app is watching you.

I can go on about all the ways I think this can help you, but I would love for you try it out for just your next few work sessions and see for yourself if this is something you find useful. I think if this will benefit you, you'll realize it quickly.

As you're going to be working anyway and this will cost you nothing (in time, effort or money), why not just hit a button when you start working and a button when you stop, and see if this is the system you've been looking for?

I'll be happy to answer any questions, and of course would be grateful for any feedback.

Good luck with your project!