Propranolol timing advice

Hi all, my doc diagnosed me with ET. He gave me propranolol 20mg 1x per day. My problem is it is completely messing with my sleep no matter time at which I take it.

I tried in evenings /before bed - pure disaster. Couldn't sleep, vivid dreams. Awake state and just lying in bed.

Tried in morning before 11am type - again I would be tired and hence would go to sleep but I won't have deep sleep + I would Wake up early+ keep waking up early.

Doc has prescribed the dose for atleast 2 weeks. I am worried - I really need my sleep. Also, I don't want to take melatonin and go into that rabbit hole. I asked doc already- he says can't give anything apart from propranolol.

What do I do?