It's such a weird situation right now everybody went from virus and vaccine expert to geopolitical expert within 10 min.
It took the West like a year of sanctions and aerial bombardment, then 3 weeks of "Shock and awe" to take over an Arab nations. If there is one thing modern day arabs are known for is they cant do modern warfare.
Now take Ukraine its like 40% bigger than Iraq so i think its save to say it should take Russia like 5 weeks to beat the West without sanctions on Ukraine without months of Aerial bombardment. If at the end of this months no peace deal is agreed on between Russia and the Ukraine then it's should be seen as a hick up.
But it might also become a multi year invasion every thing is possible in war.