Talk with your pro shop expert. This can depend on your slide. There are Bowling shoes with exchangeable soles and the soles have different surfaces allowing more or less slide. Some shoes also have "plugs" which are discs that can be exchanged in the same way and have different surfaces to assist with the slide.
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Depending on the shoes, scuffing the sliding foot sole can help. There are also Teflon style patches that can be glued to the sole.
There are also different bowling shoes with replaceable soles so that the slide characteristic can be adjusted depending on the approach at a center.
Buff 'em up. Take an old rag and keep rubbing the soles until it moves without much resistance. Hopefully this helps.