My little girls are approaching 3 months now and they are the best thing that has ever happened to me. I don't have any other children to compare, but they seem to be pretty easy babies. They are usually quite content and I am surprised to be getting a good 6 hours sleep every night (2x 3 hours with a feed in the middle). But I keep getting pangs of sadness about what they miss out on being twins 
I feel like I rush everything with them because I'm conscious that the other one is waiting. For example, bath time should be a lovely opportunity to bond but instead is just done as quickly as possible. They are formula fed on demand (breastfeeding just didn't work out) and although they both tend to be ready at the same time, they don't give me any warning or early signs of being hungry. So I have to run off for 5-10 minutes to get the bottles while they scream the house down. I can't help but feel that this will affect their attachment and feeling of security 
I don't cuddle them half as much as I should because I'd feel bad for "choosing" one to pick up! And I feel like I always need to be ready in case one actually needs something. When they both cry at the same time it breaks my heart that I can only tend to one.
Things are easier when my DH is around as we take one each. But he is working a lot, and with lockdown there is nobody else like grandparents to fuss them.
I just wanted to get this off my chest really. If anyone has any thoughts, experience or advice then that would be a bonus.
Also, triplet parents... You are superheroes!