This is somewhat dependent on what your warm-up is. But - spending 10 minutes doing it seems like a bit of a waste. Athletes need that sort of warm-up time as they need to warm up most/ all of their muscles, ready for vigorous action to follow. Guitarists have hands and fingers, possibly arms, that need to work, and at your stage, nothing will be that vigorous after!
Much better to just get on with it, let's face it, playing through a few scales and chords is an effective a warm-up as any.
Unless you're the sort who needs a regime as rigid as this appears, ease off somewhat, and you'll find that some days there's no scale practice, or you spend twice as long as the last time putting a chord sequence together. So what? We don't put ourselves under the stopwatch with most activities: why here?
Also bear in mind that if you appear to have learnt something, it won't be much use practising it to death any more that time. Leave it for a few days, then re-check it. Correct 1st or 2nd time? Yes? Then leave it for a week; try again. No? Then last time was a fluke, so try practising it again. BUT - your mindset isn't going to be the same every day, so why should practice regime be? Sometimes, 10 mins into practice time, is a good time to stop, others, you could do 45 mins. We're human, not machines!