That's perfectly normal. I recommend you study just Spanish and French for now. To avoid confusing them, I suggest really concentrating on the pronunciation. Even when the same word is in both languages, it should sound totally different. Using, for example, French pronunciation, will help keep your mind in French mode. Later, it will be super easy to master Italian, which is mostly French vocabulary and Spanish phonetics. Italian grammar is mostly the same as French or Spanish or both.

Eso tiene razón, y es porque estoy estudiando 日本語 ahora, en lugar de una idioma como francés o italiano. I'm planning to wait until I am content with my Spanish knowedge antes de estudiando las otras idiomas románticas.