Sleep regression 4 months

Okay someone please help me! This is my second baby and my first baby was literally the easiest baby ever and slept through the night from like very early on and never had a regression and she still sleeps through the night at 3 years old. But my second baby she was actually good at first, slept through the night (7-8 hour stretches) at 2/3 weeks old. Granted she was going to bed at like 12 but then sleeping till 7/8am… in the last couple weeks she had bronchiolitis and was congested so was definitely waking up more throughout the night which I expected but now she’s better and she’s falling asleep on me at like 7:30pm and will then sleep till 10pm and I’ll feed her and even then she will sleep again till like 2am but then she wakes up and I have to either put my hands on her or hold and rock her and she will fall asleep but I feel like 15/20 min later she’s up again and we repeat this process all night till like 5:30am and she wakes up again at 7am . I can’t keep doing this. Someone please help me!!!