To all the kind people who answered my question many many thanks
The general consensus seems to favour taking levo before bed or during the night if you need.a vvisit to the loo.
This makes sense to me as there is no need to wait an hour before coffee and breakfast
I am lucky in that I do not have other meds to think about so will triial the night option.
Will let you all know if I notice any effects, good or bad
Once again so grateful for advice and support