[cencio]

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Is there a way to avoid the 3 nt with a plausible bid?

[P_Marlowe]

Give West a chance to bid 2S.

But assuming normale agreements, I happen to play myself, for whats it worth, the answer is no.

[mw64ahw]

Possibly with the 5-card Major ask I play

2N - 3♣
3♥ 2♠ & 2/3♥

Now I play
3♠ relay to 3N followed by 4♣ is my limit
3N 55xx
4♣ SI
However, the temptation is still there to assume opener has Hx♠

[Cyberyeti]

We play the more natural version of what MW64 plays

same meaning but 2N-3♣-3N as neither 3♠ nor 4♥.

I would use the ask in case partner has 5♥, not sure if I'd remove 3N

Unless you can see opps hands, there is no game on, so 5M gains you little at IMPs, but -1 vs -2 at MPs (where you're even less likely to move from 3N) might matter