Use Mirrors Creatively
Let's say, for the sake of argument, you have a mirror in place to keep the sun off Venus so that it cools down. Why do you need to make the planet spin? If you want a day-night cycle, just put a mirror in orbit that acts as an artificial sun. It will catch some of the sunlight and focus it back on the planet, but instead of being at the mercy of the sun, you can change the speed, size and angle of your sun-mirror to control how the sun works on your planet.
Give the mirror a little bit of an inclination relative to the sun and planet to give it seasons like on earth, although you might make them less extreme, cooler summers and warmer winters.
According to that gruff engineer guy: "But if your determined to spin up this [female doggo], theres always plan B"
Use a Space Elevator
If you have the technology and material science expertise to build one, just build one and use a rocket at the end to spin it up.
If you don't however have that kind of engineering prowess, or don't like space elevators, then just building cables from the surface to high above the exosphere (outermost layer of the atmosphere) maybe halfway between low and medium orbit (about 1/6 the way to geosync) and use rockets to keep the space station(s) aloft, and secondary engines to make them spin.
The rotation of the stations would drag the planet with it, albeit rather slowly (lest the cables be ripped out of the ground), and transfer the new angular momentum into planetary rotation.
If you want to be cheap about it, put solar collectors on the stations and beam power from the giant mirror-shield you'd need to cool the planet off, and use it to power the engines.
Not only will you shade and cool off the planet, you could use this energy to syphon off the Venusian atmosphere and power CO2 and N2 hall-effect engines, or just superheating the gas into a plasma with directed sunlight and run the station like a thermal rocket.
You Have Bigger Fish to Fry
Personally, I would be more concerned with how the hell you plan on moving that much frozen CO2 off the planet, as you'd need something reminiscent of a dyson swarm (it isn't even that big, just a thin belt of mirrors lower to the sun than mercury) collecting a few exawatts (maybe just two or three) to power your operations. (For reference, the sun puts off a few hundred thousand exawatts, each being one thousand petawatts, each of those being the combined energy consumption of earth.)
I recommend watching Kurzgesagt's videos on the topic of terraforming Venus and Mars, as they both have helpful information. Especially if you want to do it on the fast and on the cheap.