no no no no NO. i don’t know who advised you that, but you need to stop talking to them immediately. i mean, immediately.
episiotomies are bad. bad, bad news. anytime they have to cut you for anything, its bad. they don’t even do many of them here now because they’re bad.
if you tear naturally, its ok. your body will heal quicker and cleaner, MUCH more so than if you get cut.
do NOT ask to get cut. let your doctor make the call for you. in fact, if anything, you should be doing perineal massage and insisting on NOT having an episiotomy done.