Hello, I am new to having a Meyer lemon tree. I got this one about a month ago. It was doing great but some problems arose approx. two weeks ago. First some leaves were yellowing from the stem, I read this was a sign of low nutrients so I fertilized with a 10-5-5 slow release and this yellowing seems to stop. (Not sure if this is relevant just wanted to mention it). Now the leaves seem a bit drooped, have patches of lost pigment and there are dry brown spots on some (I’ve attached some photos). Additionally many leaves have fallen off (most without the stem indicating stress). Additionally when I first got the plant there were maybe 30 flowers about 15-20 got fertilized but now there is only one new flower. I think I had mites (saw a few tiny webs and one bug) so I sprayed the plant in soapy water ~4 times and wiped down each leaf and haven’t seen anything since. The plant gets a good amount of sun, prior to it being warm and putting it on my balcony I had it under a grow light for 9 hours a day. I still bring the plant inside at night as it has been dropping to less than 10C. Would appreciate any advice!