なんでしたら
Meanings
1
if you like; if you prefer; if it suits you; if you don't mind; if necessary
usually written using kana alone
Polite conditional phrase used when offering an alternative or suggesting something tentatively. Often interchangeable with 何なら, but 何でしたら is slightly more formal and polite.
See also: 何なら
If you like, shall I do it instead?
If you prefer, another day is fine too.