You have probably saved dozens of courses and articles and never returned to them. The problem is not a lack of interest, it is a lack of a system.
A simple tracking system changes everything. Keep one list of what you are learning now, with a next step for each item. The moment you finish something, you know exactly what to do.
Use any tool you like, a notebook, a notes app, or a simple spreadsheet. The tool does not matter, the review habit does. Spend ten minutes each week updating the list.
Add a small note under each item about what you actually built or applied. That note is the difference between collecting information and actually learning. A tiny system, reviewed weekly, beats any elaborate productivity setup you will abandon.