Recommendations For When To Start Speaking Lessons For Experienced Learners

I've recently started learning Polish and I'm trying to move as quickly as possible with it as I'll be spending some time in Poland, and I'd like to avoid relying on my English as much as I can while I'm there. I'm a native English speaker and I've been learning Swedish (~B2 level) and French (~B1-B2 level) simultaneously for the past several years, so I've been through this process before but of course with a lot of wasted time. Swedish/French are pretty close to English as well, so I think learning Polish will be significantly more challenging for me.

IIRC I started speaking lessons in French on italki around 5-6 months after starting to learn the language as I wanted to make sure that I was speaking mostly in French in the lessons and not being taught in English, but maybe it would have been better to start the lessons much earlier on.

I'm wondering, for those of you who started learning a new language after having learnt a language(s) to a decent level before, how long did you wait before starting speaking lessons? Or what are your recommendations around when to start speaking lessons?