Suggest Remedy For Excessive Sleepiness When On Levothyroxine

Hello. I recently had a nodule taken out and started having symptoms of hypo. They put me on .25 and now I m at .50 and they say the latest test is in range but I have to set my alarm for 0400 to take the pill, wake up at 0700 feeling ok and by 10:00 it s not that I m feeling sleepy, I m practically in a ambien induced sleep. I will hear my dogs playing around me, even jumping on me but I can t wake up. I ll sleep either a good 2 hours or take 2 naps to equal that time. My head feels foggy and generally I feel either foggy or sluggish...I m reading about B12 or D (I m out in the sun all day so think that it may be more a B12)... I KNOW it s the thyroid or something to do with the Levohtryonixe I m on but I can t function having to waste the day sleeping..any suggestions? Thanks you!!