How can I strip my dyed brown hair back to my natural ash blonde?

So the story is…I have ashy blonde hair NATURALLY. and I used to dye it a shade or 2 lighter (champagne blonde). Then my BFF and her sister and my sister said I should try brown ( I also didnt like my dyed champagne blonde hair that much becaue it practically matched my TAN skin) so I dyed my hair brown…and do to the fact of how I used to dye my hair lighter blonde, when my hair got dyed brown it pulled it to be a lot darker than expected (it was a semi-proof so it later faded) but then I redyed it a permanent light neutral brown, and still pulled darker but not as dark. and it looked good! buttt (here’s where my troubles come in) when my roots grew out (being an ashy blonde) I dyed them with the natural light brown dye, but now my 2-3 inch roots that have been dyed this natural light brown are about a shade or 2 lighter than the rest of my hair…due to the fact that the rest of my hair used to be dyed lighter blonde, so when dyed this natural light brown it pulls darker then it should. So I now I have these 2-3 inch light neutral brown dyed hair, that is about 2 shades lighter than the rest of my hair (because how the rest of my hair used to be dyed lighter blonde, then that light neutral brown and yadda yadda yadda) I would like to strip this brown hair and go back to my natural ashy blonde hair, becaue it is EXTREMELYYY X1000 STRESSFUL to have these light roots, and I don’t know what to do with it!! Also, I would like to not cause severe damage to my hair at all…im just a teen and dont wanna ruin my hair already!!! So PLEASEEE I REALLY NEED SOMEONE’S HELP! I actually cried today because of how stressful this hair problem is…soo am I able to strip my hair evenly back to my ashy blonde?? do I have to bleach and damage my hair?? or should I just dye these roots a darker brown and not dye the rest of my hair at all…(although I would like to go back natural, so much easier) thank you! please help me…im desperate :’(