Read aloud every day at a slower pace to exercise your vocal folds. Work on addressing your anxiety in social settings, whether that be medications, breathing techniques, vitamins or medications. Challenge yourself to speak to random people. Go to the shops and chat with random sales assistants. They’re strangers, so who cares if you block here and there! The main thing is you’re practicing your speech in the real world, not just by reading in a room alone. Don’t overthink your stutter. The fear will destroy your progress. Good luck.