Please advise – new to LDN – feeling “hungover” and groggy the morning after

Here’s my issue: I take 1.5mg before bed and I’ve been waking up feeling grumpy, groggy, foggy, and tired. I’m a natural morning person and I find this change very strange and uncomfortable.
Is this normal? Should I just power through? Or does it sound like I’m one of those people who should be taking my dose in the morning instead of evening?
Please help! Thank you!