I have troubles these days with running high overnight, it's much easier/less stressful to take some short acting well before bed so you have some confidence that you won't go low.
I used to find that taking all of my abasaglar pre-bed would make me run low overnight, which is part of why I split the dose, but YMMV.
If your levels are stable overnight, even if they are too high for your liking, then you basal (abasaglar) is likely correct and you likely need to take more short acting to cover your evening meal and bring your levels down before the effect of that insulin has worn off.
As
@Antje77 said, have a chat with your team, but equally don't feel you need to do what they say (am I allowed to say that - be polite about it of course but you will end up knowing more about it than they do!), you've got to live with it and taking control of dosage changes is part of that,
[What I actually need to do (as I would prefer to keep the split dose for flexibility when doing sports) is to try to eat supper earlier and also ensure my blood glucose is stable beforehand.]