Hi Tracey,
Well first the key is to do it everyday,even if it is for 5 to 10 min. Eventually you can progress up to 30 min or an hr. Regarding not staying focused, of course,you’re just starting out. You will not be able to clear your mind so easily and quickly. Refocus and regroup. If it helps start to meditate with a voice or music directing you. There are plenty of resources here and on YouTube. Hope that helped and remember to make it a habit. Everyone can find time each day to meditate.
Thank you and take care
-AP85