NetTake
NetTake[net, end] takes only those layers up to end in a NetChain or NetGraph.
NetTake[net, {start, end}]takes only layers between start and end.
Examples
NetTake[trainedNet, 5]NetTake[net, {"input", "conv3"}]NetTake[NetModel["ResNet-50"], {1, 10}]*See the official Wolfram Language Reference for more details.