When I first started I practiced like crazy: 2-6 hours every day. Half of the practice was scales, arpeggios, learning the fretboard, technique study etc and some was working out actual songs for the band I was going to be working with.
For the first couple years, I maintained a very steady routine of an hour or two a day - unless I just didn't feel like it, then I took a day off. As @lfmn said, this can be very helpful to just let your mind and body subconsciously process things.
Once I started passing auditions and feeling a bit confident that I could step into any situation (in my end of the pool of course) and get the job done, my routine is a bit more relaxed - I tend to play 30-60 minutes a day. I do a little work on technique leaks while I'm staying sharp songs I need for my bands. But most of my time is spent just keeping the songs under my fingers and keeping my voice active (that degrades so fast!). Unless I have something to cram for, I'll generally take a day off after a rehearsal or gig just to clear my brain and let my body rest. Occasionally, I'll fire up Pandora, pick a channel and just jam for the fun of jamming.
I was really surprised how poorly I used the recent downtime to improve myself. I started out strong, and have gained a little ground on a few of my technique leaks, but overall, was not very active - it was very hard to keep grinding through my set lists without rehearsals or gigs on the horizon and although I've improved my practice skills since I was in school (actually working out problems rather than just playing the stuff I could already play well), I've never been one to spend hours just doing exercises. But I do try to work on my technique leaks as I'm keeping songs fresh: trying a different plucking technique, or finding another way to play a line, moving a line form my five string fingering to 4 string, etc so I get a little bit of personal progress while doing otherwise mundane work.
