Keep going – aim for at least 100 characters so Timo has enough context.
Nice start. Messages around 300 characters get accepted more often. Add a concrete goal, what you've tried, and where you're stuck.
Getting there. One more beat – why this mentor, or what success looks like in 90 days – usually pushes you over 300.
Strong length. Mentors reply faster when they can picture your situation this clearly.