I have a good base in Spanish, is it ok to add Italian simultaneously?

I am learning Spanish for a while now, but now I may be in Italy for a long period of time, and I will need to know the language. On one hand there are many similar aspects, and on the other hand each language can get me confused with the other. Can the base that I have in Spanish help me not to get a mishmash in those languages?

I have a good base in Spanish, is it ok to add Italian simultaneously?
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