Truckstop said it.
If you want to improve quickly, you gig. It gives you a focus to prepare for the gig regardless. You will MAKE time, plus you learn to think on your feet ‘cos you have to on a stage, plus you learn to play with other musicians, stage craft, gets you out of the house, adrenaline buzz is beautiful, etc, etc.
You will learn 10 times faster and more on a stage than in your bedroom. :-)