If you can’t speak good enough and remember minimally enough vocabularies; I think, listening > speaking. Unless you can go this far – My Challenge: From 0 to speaking proficiency in 6 months
Also, aim for some comprehension to get by, rather than perfection. Reading is more of a distant goal, imo.
Finding a nice digital dictionary isn’t bad at all. I find Gboard handwriting keyboard better than built-in handwriting pad of any dictionary.
OCR or Google Translate may be helpful, but not so reliable.
In any case, grammar is more important.