To counter strategic bombing you need fighters. Only fighters (and the strategic bomber/s) get too fight before strategic bombing, the target industry/airfield/port too gets AA vs incoming surviving bombers but that’s it (AA guns can not be used).
If Germnay has loads off fighters in escort it gets tough, but those will not fight at all if you feel it is to much and leave your fighters on the ground.
The problem is if Germany has laods of startegic bombers, you will never shoot down them all…
'd say make sure your fighters survive and have several, if all german planes are in Russia the Atlantic wall will be breached by your allies. Also You can get British and/or US fighters to help from India/elsewhere?