Maybe controversial but I am struggling

Okay, this may be a controversial subject because I know people have very mixed opinions on this but I need to hear both sides right now.

My baby is 23 weeks old. She was sleeping through the night from 7 weeks to about 4 months. Right around 4 months she had a cold for 3 weeks. Also we found out daycare wasn’t giving her enough breastmilk during the day until I asked and then our provider said “I know I thought she looked hungry after eating” 🤦🏼‍♀️ so now she is feeding her more. Well I believe during that time partly why my baby woke up was because she was genuinely hungry from not eating enough and her nose was sooo congested. Well I would feed her and clear her nose rock her then put her to sleep again. I believe I created a crutch.

She can still fall asleep on her own. We have a bedtime routine and I put her to bed awake and within 5 minutes she’s sound asleep. She takes excellent naps. But at night she wakes up like clock work around 1 and again at 3:30am. I stopped her dream feed which I used to do, but lately she wakes up at those times to eat and then multiple times just to have her pacifier put back in.

Okay so my controversial question is - should I sleep train. Everything I’ve read you’re giving your baby 5 minutes to cry then u check and you give another 5 and so on. It breaks my freaking heart to let her cry. My husband owns his own business and it’s very dangerous for him to be over tired so I’ve been hesitant because she will wake the whole house up. But after last night my husband is seeing how worn out I’ve become and thinks we need to bite the bullet and do it over the long weekend.

Helllp please give me advice or tips on sleep training or another way to help her fall back asleep on her own: I know she knows how to!