Some good advice here. Bottom line, at 23 you are still young and your body is still adapting to training. 6' and 160 lbs is slender BUT so are both of our Pavels and they are extraordinarily strong for ANY size!!
First of all, this is practice. Remember that you are practicing EVERY rep. Be mindful and in the moment. Strive to feel the movement, you'll know when it's right. If there is an SFG in your area and you can afford a lesson or two, I highly recommend that.
Keep plugging away and ensure you OWN the 24kg before focusing too much on the 32kg. There is no "time limit" for the getup. In theory you can take all day for one getup. Realistically, ensure that you STOP and hang out for a few seconds at every point. This ensures that you properly position your body and the bell and keeps you from "falling" at the end. This also points out any problem areas as we speed through our weak getup points, relying on momentum to compensate for weakness/poor technique.
When swinging the 32kg don't aim for a certain number. When you feel the "pop" going, set the bell down. If it's only 2 or 3 swings, then so be it. Again, this is practice. If you are practicing good, hard, snappy swings then you will continue to do those. If you extend a set too far your last swings will be poor and that movement pattern will ingrain itself.
Please post a video, if able. There are a lot of experienced SFGs here who enjoy helping out.