B’shoa tova1 I didn’t have the 1-2 problem like that because my #1 and #2 are 5 years apart. My #3 & #3 are 16 months apart and my #3 & #4 are 19 months apart. I tried to give each one attention. I found that a lot was the personality of the child. My #2 would lay her head on my lap while I nursed #3 and was happy. I thought it would be the same by #4 but #3 isnt the same child as #2. Do your best. Ask advice but don’t make yourself too crazy. Each child has his/her own personality and needs their own way. Some jelousy is normal. Think about how you are with your siblings.
Good luck. I’m sure your do fine.