It'll take time and practice to get back into the routine you want. Snuggles and cuddles, and slowly work on easing baby back to bed. It'll feel long, but you'll get it. Complex, just examples, it's taken me the past 2 weeks to get a naptime routine back to what I'm okay with. Another note, it's taken me 2 months to get my space back to myself at nighttime, cause of teething and needing to be comforted by mama at nighttime with the discomfort of teething A good feeding before bed may help, but ya gotta figure out what may help for you and baby on that good feeding before bed
It could be unrelated to sickness and just a phase. My little one is 3 and he still has ups and downs with night wakings and always has. I would try and gently go back to your routine you had without being too hard on yourself - get some extra sleep in the day or early nights where you can and things will get to where you want them to be x
The comfort/soothing ladder