Top Cropping US-05 timing & re-skimming

[Damn]

Still new to this game but tried my first attempt at top cropping yeast off a bubbling wort.
I scooped my first batch off the top 24-36 hours after air lock bubbling, it was a thinner layer than expected but still got some.
12 hours later I've inspected my batch and about 5-7mm of yeast has settled in a 1L Jam Jar with a thick krausen in 400ml of beer.

I appreciate some experts say US-05 is not a good top cropper. But have read others do do this successfully.

Questions: 1. Can scoop more Krausen off and drop onto current batch in fridge? (This 12-18 hours later)
2. I'm brewing again in 4 days. Would I be better off to make a starter rather than scooping another batch?
3. Would I better off to give up and just buy some US-05.

Thanks for any advice opionions.