Controlled crying is a bit of a boo word and can be taken to describe a whole range of sleep-training techniques so whether it will work for you or not is an open question. But I think the WHO recommends not trying it before 6m.
On the whole I'm not a fan of training babies or trying to exert control over them to make them fit around adult needs before they are ready. I'm not sure if I'm quite a lentil weaver, but I definitely do a spot of lentil cross-stitch.
However, at 6m DD abruptly stopped feeding to sleep. For a few weeks she tolerated being rocked to sleep in my arms but at 7m even that stopped working. And then I was left with an exhausted baby who howled when placed in the cot, howled when I tried to feed her and howled if I paced the floor cuddling her. Getting her into bed post feed could take 90mins or more. It was just about bearable when DH was around to do a shift but not otherwise.
So one evening when she was 7.5m and DH was away with work I changed tactics and just popped her in the cot once I knew she was tired and well fed and clean and comfortable. She was smiling and giggling when I put her down and only started to cry once she realised I'd put her down. Then I turned off the light and left her for two mins to firm my resolve (and call DH to check I had his blessing) and went back in spoke calmly and softly to her. I stroked her back, I told her all about how much I loved her, but that she was tired and needed to sleep. She howled and I took another 2 min break and called my Mum for moral support. Then I went back and resumed the chatting and stroking and she popped her head down on the mattress, rocked from side to side a few times and started to snore. Total time about 15mins with only 4mins of unattended crying.
It doesn't work quite as quickly every night, but it has never taken anything like 90mins to get her down since. The deal is once she is definitely ready for bed and not hungry or in pain she goes into the cot and won't get picked up again until she has had some sleep (I'd obviously vary this if she was poorly or I had any reason to suspect she was in discomfort). But I'm happy to reassure and stroke from the sidelines for as long as it takes. Most nights it only takes around 2-3mins now. Some nights I do leave her for 2 mins (never more) to regroup and keep myself calm.
She is sleeping for much longer periods at night now (4-5hr stretches up from 1-1.5hrs). I think she probably was developmentally ready to start settling off to sleep with less help so whether this can help you now will probably depend a lot on your baby. And tbh I took this approach out of desperation, if I'd had the choice of rocking or feeding to sleep I'd have continued to do so. It sounds like you might be in a similar position (once you have followed all the advice given above and eliminated any other possible causes for your little one's screaming).