This is most likely a dosage issue- please see my post on troubleshooting hCG dosage here.
There’s no 100% rule for knowing whether to increase or decrease which is what makes it hard but usually if you are having trouble during the whole a.m. of Phase 2, your dosage might be too high, and if you are having major trouble towards the end of the day, dosage may be too low (meaning the dose you took in morning isn’t lasting in your system long enough to help you in the evening.) But this isn’t always the case is all.
It sounds like in your case it’s possible that your dosing is too high if you are feeling less hunger in the evenings, as you get further away from the time you took your hCG.