Skateboarding help please and thanks?

I just started skateboarding 4 days ago and i can stationary ollie about 4- 6 inches. I am having alot of trouble ollying while moving and if im LUCKY ill ollie about 1 inch. I guess maybe im afraid to ollie while moving but idk. Please tell me if you think im doing well or not for only 4 days and if you have any tips on doing a moving ollie.