Too many indeed! I'm not an expert but here I go!
This answer is going to be long:

• Do you have the resources / time to learn a new stack? If no, stick with what you already know.
• Database structures are a job itself! Only advice that comes to mind is: don't use mongodb if your structures have relations!
• I like writing user stories for my projects. Nothing perfect, I start with something simple, enough to have a global image of what I need. Then I separate needs and start again the story, but deeper. Lastly, I love doing diagrams and what not in old fancy paper with a forsaken pencil (it's a very simple diagram of one of my current projects).
• About software for project management, whatever does the job, asana, trello, clickup, zen ... Even gitlab has a very useful To-do that can be used. I think it's more productive start using just the tool that works for you.
• You need to be careful to not enter in a taking decisions loop and never take off your project.

Hope It helps!

Post below via

amorganPD

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Here are some general items, depending on what you are building:

User Experience design

• Understanding user needs
• Better understand the user, the context of use, and the type information and their relationships to each other
• Prototype the wireframes in something like UXPin (uxpin.com) or Adobe XD (adobe.com/products/xd.html )
• Test it with potential users

Functional design

• Define your features based off of user needs
• Further define features based on technical requirements (i.e. to achieve user need x, feature y is needed. To implement feature y, layer a, b, and c need to exist)
• Isolate and test unknowns
• Gain momentum by creating complete sub systems / components (i.e. design the database structure with the core required components, then add more data structures as needed)
• Use UML or YAML for diagrams or sketch it out