Hi dude, I would say about 6 months am no bassist but that's just a guess. I am sorry if its longer. I've only been playing guitar for under a year. as I am a drummer of 15 years haha
If I had to guess I'd say between 3 months and 1 year. Just gettin started more or less. Don't feel bad if its longer. Took me 2 years to really grasp and it and play coherently.