Try this first
Keep the dose the same and grind a little finer. Pull another shot and compare taste and flow.
Why this can help
Changing one variable at a time makes the result easier to understand.
What to try next
Check basket dose and even distribution if the flow is still uneven.
Related skills: Grind and espresso. Explore the Home Barista Roadmap for more context.
Every coffee and setup behaves a little differently. Make one change, taste, and keep the result that works for you.