Hello, i did my tb test march and i was asked to carry out a sputum test which will take about 10 weeks. My CoS expires in a week time, but I've paid my visa fee, but haven't booked a date for my biometrics. Hope this won't backfire? Any suggestions?

Hello, i did my tb test march and i was asked to carry out a sputum test which will take about 10 weeks. My CoS expires in a week time, but I’ve paid my visa fee, but haven’t booked a date for my biometrics. Hope this won’t backfire? Any suggestions?