I agree with the response below about slowly making changes and adjusting your schedule. Depending on what time you need to get up, you may need to be planning on 8-10 hours of sleep. Your child may still need around 12 hours of sleep. On weekends when you don't get up, how long do you sleep? Consider that part of that sleep is your body trying to catch up and part of it is what you naturally need.
Next, some people do not hit their deep sleep and REM sleep until the end of the night, where people that are naturally morning people hit it much earlier in the sleep cycle and then their bodies naturally fall into a lighter sleep making waking easier.
If the alarms are going off in the middle of your REM sleep, you are losing valuable time for your mind and body to recharge, you will feel groggy and extremely tired and it will be difficult to get up. Adjusting your sleep cycle will definitely help with that.
I always had that problem and then one day my husband and I were talking and he said he had a friend who never used an alarm. He would tell himself he wanted to get up at such and such time and he would wake then. He felt better not being jarred awake by a blaring alarm. So my husband tried it and it worked. For me, I had more adjusting to do and had to use a week of vacation to practice and not feel stressed about oversleeping since my husband had to get up and leave 2 hours before I had to get up. But just a couple days went by and I was amazed at how easily I woke up on time without the stress. My mind would become aware of the fact that it was nearing time to get up and I would go into a lighter sleep and it was easier to wake up on time with no alarm!
Now, I always try to go to bed at the same time to make sure I get enough sleep, but those few nights I stay up super late for some reason, I still wake up on time, just feel tired. So I make sure I go to bed on time the next night to avoid getting sleep deprived and over tired.
It has reduced a lot of stress, a lot of running behind and a lot of always being late to things in the morning.
The other suggestion about setting out your clothes works great too! I also put everything I need all together on the kitchen counter, including cell phone, car keys, notes, items I need to bring with me for the day etc.
If I am stressed and have a lot to do, I keep a notepad next to my bed with a pen. If there are tasks running through my head, I simply write them down. Then I can relax and sleep well knowing I won't forget them the next day.
And last, never keep your cell phone in your room and if you can, shut it off at night. The radio signals have been linked to brain wave distruption which shows a negative impact on sleep patterns.
Happy Sleeping!
A.