This question has existed from the beginning of time and the answer has always been the same.

You should never be in a position where there is just one girl. Do whatever it takes to have multiple prospects lined up. An abundance mentality will automatically fix a lot of issues.

I understand if you are new to the world of improving your dating skills, you haven't been exposed to this idea and it will feel wrong. But realise the girl you are pining after has multiple guys after her.

If you have been working on your game for more than a month then there's no excuse. Approach more, get more contact details, more insta-dates, more dates. More, more, more! Until you lose track of all the prospects you have lined up.