Yes, not everyone needs a growth scan at 7 months, a few of us in my mum group were only referred for it when the gynae had specific concerns, like if baby was measuring small, placenta position wasn't ideal, or amniotic fluid levels needed monitoring. If your 5-month detailed scan came back all clear and your gynae isn't flagging anything, you may just go straight to the 8th or 9th month growth scan instead, or skip it altogether if everything looks good. Some of my mum friends who had higher-risk pregnancies ended up doing multiple in-between scans, while others with straightforward pregnancies only had the standard ones, so it really depends on what your gynae recommends based on your individual situation. Best to just ask your gynae directly at your next visit whether a 7-month scan is needed for you, since they'll know best based on your history!