Sleeping too little is bad for your health in a thousand ways. Trying to catch up by spending the weekend in bed is not a long-term solution.
Notice what time you wake up on Saturday and Sunday without an alarm clock. If that is not about the same time you get up on work days, your sleep rhythm is disturbed and needs fixing.
To improve it, go to bed ridiculously early each day next week. Seriously early, like a 8 or 9 PM. Make a note of when you wake up fully rested. If that is not before your usual time, you have a sleep deficit you need to address. Keep going to bed very early until you wake up before you have to. Then you can start adjusting – if you want to get up at 7AM and you wake at 5AM, you can go to bed two hours later. A good sleep rhythm is necessary condition for health and success.