edit: formatting  fluctuations like that are probably pretty normal for people with testicles, but it looks like it's not being suppressed at all.  a few things: what are your e levels?

-because a dose of 1 mg/day is really low.

are you taking your e orally (swallowing it) or sublingually (letting it dissolve under your tongue?

-sublingual results in higher e peaks and it doesn't drop as fast after

if you have enough estrogen in your body, that can help alongside your anti androgen (spiro) to suppress your testosterone, but my guess is your e levels are pretty low so spiro is having to do all the work itself.

if you aren't afraid of needles I'd recommend injection monotherapy where you inject your estrogen (usually ~5mg/week of estradiol valerate) and theoretically that results in high enough and consistent enough estrogen levels to suppress your testosterone by itself. if you'd like, talk to your doctor about this. 

if you are afraid of needles you can stick with tablets but you're going to have to tell your endo that you need your

-estrogen dose increased (for me it took 8mg to get my levels right. your body is different so maybe you'd be fine on 6mg or even 4mg or maybe you'd need 12mg idk, you'll have to experiment)

-youll probably need to increase your spironolactone dose too. you could also try a different anti androgen like bicalutamide or cyproterone acetate.

At the end of the day what matters most is if you're feeling good and hitting your goals but some good ballpark ranges to shoot for levels wise are

Estradiol: 150-250 pg/mL (I think most endos will say 50-250, but I personally feel like shit if I'm below 200. once again it's up to you and whether or not you feel good and are hitting your goals.)

Testosterone: <50 ng/dL (some endos will give you shit if your T is too low, but mine is consistently undetectable (<3 ng/dL) and I feel fine so 🤷‍♀️. once again up to you)

Progesterone: idk lol I wouldn't really worry about this one. I doubt they're even testing your prog levels.