Of course you can't. Women don't have to regularly dilate their vaginas to prevent them from closing up.
An inverted penis is not a vagina. It doesn't form part of gestation, conception, menstruation. It doesn't have a cervix, it comes to a dead-end.
The vagina does have a purpose, you know! Other than just sex.
For anyone who is interested this is an article by Juno Roche, a transwoman who speaks very candidly about their neo-vagina.
www.refinery29.uk/transgender-vagina-surgery
It's hard not to have any sympathy for someone who has set much store by something that doesn't seem to have come true for them.
But it's also quite obvious, that this is a uniquely transwoman experience, not a woman's.