Well, it’s admirable to try to attain this goal… but I wouldn’t beat yourself up over it. I doubt anyone other than Christ has gone a day without sinning in some way or another.
Really, even if you stayed in bed the whole day and slept most of the time you’d be sinning… that would be avoiding Christ’s call to ‘action’, right? We’re called to ‘go out’. Come to think of it, spending the day in bed would be akin to SLOTH! LOL