I want to ask about The walidity of fasting if did not wake op for suhur or fajer

Assalamu aliekum i want to know if my fasting is accepted if i dont wake op for suhur or fajer due to the reason i have to wake op everyday early by seven in the morning to send my child to school so i get very tird. I have waken many times for suhur and fajer but some times cant wake op due to tirdness. Hope to get an answer Assalamu aliekum