Having support is the way it's supposed to work. Unfortunately in war, things often don't always go as planned.
To true and the Russians proved that, and war dies sometime necessitate doing what you have to not what you want, but Ukrainians have trained by NATO countries in NATO doctrine for some time and the fact they are being given tanks apcs IFVs SPGs and to the extent possible using air assets both manned and unmanned they are well in their way to combined arms maneuver and combat
Just another point to address what some keep claiming why does Ukraine need more stuff if they are “winning”
The obvious to replace loses, no one says they are not suffering loses, but what is rarely brought up is Ukraine is constantly building up new units, these units need equipment. Just an aside