I can read Traditional characters but lock up when trying to form sentences

I’ve spent a year grinding through reading apps, so I can recognize a decent amount of Traditional characters, but my brain completely freezes the moment I need to say a sentence in Taiwanese Mandarin. I’m comfortable with the written language but terrified of speaking. How do I bridge this gap? Is it worth using a tool like Chickytutor.com to practice low-pressure, realistic dialogue until I get past this block?