On the medical form there are questions about your mental health, the mental health question will ask : have you had any mental health issues in the last three years, if you answer yes they will write out to your GP with an M2 medical form asking about your mental health and medication, there will also be alcohol questions as well, this form then that goes out to your GP will have a six week turn around, if you do answer no and they find out through your GP you will add another 3 months to your application, however with the current condition with covid 19 DVLA might just issue out your licence as mentioned above, it's a bit of a lottery I'm afraid.....