✓Your sleep disturbance may be a temporary effect as your nervous system recovers from vitamin B12 deficiency. ✓Do not stop vitamin B12 or vitamin D on your own without discussing it with your doctor..

Disturbed sleep can be due to stress, anxiety, excessive usuage of mobile during bedtime , excessive use of tea, coffee before sleeping Do consult with detailed history

Please share details of your problem,  disturbed sleep can be due to stress, anxiety, heavy meals, dyspepsia,  taking stimulants like tea, coffee, before sleeping.  Once cause is removed or treated, problem will resolve.

Avoid fried and spicy food Water intake more Green leafy vegetables more Fiber meal. Walk Do connect and consult Will help you

kindly do connect and consult with me for better treatment plan and advice on your case via PRACTO app

Avoid phone [ blue light ] before sleep.... prefer b12 after lunch preferably iv/im , Other differential to rule out as gerd , osa , psychosocial etc  consult some doctor needs evaluation... Day time restlessness due to lack of proper sleep ...

Methylcobalamin take once weekly only and d3 you can take usually via prescribed. Then you have no problem.

Proper evaluation and personalised advice are needed for your concern. A detailed consultation would be best to provide accurate guidance. Feel free to consult me for further assistance.

Your B12 and vitamin D both are too low. You need those medication. Methylcobalamine is a stimulant. Try to take them both in the morning. Or else try taking IM methylcobalamine

Go for sleep study

Already answered D3 to take after breakfast. B12 after dinner. Now a da these  defcommon in kids 9 years onwards.  So they r substituted  according to weight. No any sleep disturbance seen.. So don't worry n fulfill deficiency. Relax.

Methylcobalamin at high doses can activate the nervous system and disturb sleep — this is a known side effect. Make sure you're taking both B12 and Vitamin D in the morning with breakfast, not at night. This usually settles in 2-3 weeks. If sleep doesn't improve, switch to every alternate day dosing for B12.

Your vitamin B12 level (151 pg/mL) confirms a significant deficiency, and your vitamin D level (21.9 ng/mL) is also insufficient. Both deficiencies can contribute to fatigue, poor sleep quality, mood changes, and neurological symptoms. Advice Take methylcobalamin in the morning after breakfast rather than in the evening, as B12 may be stimulating in some individuals and can interfere with sleep Avoid caffeine, nicotine, and energy drinks after 2 PM Avoid heavy meal before sleep Follow-up testing of vitamin B12 (and CBC if abnormal initially) after approximately 6–8 weeks is reasonable to assess response to therapy

Better to get a consultation

Do sleep study

The sleep related symptoms can be because you are taking the tablets at bed time but here are some other causes to consider 1. Ask ur partner / parents for episodes of snoring at night ( might be OSA) 2. Have an early dinner and light walking post dinner ( GERD related ) also lighter meal 3. Avoid alcohol 4. Elevate ur head while sleeping slightly 5. Avoid mobile or sleeping with lights on at night Hope this helps