Re: Can't keep up
I certainly don't suggest pushing you in a direction you aren't ready to go but I wanted to give you another perspective. In the book The Womanly Art of Breastfeeding, there is a suggestion to start certain babies on solids a little early when they are separated from mama, like in your situation since you are working. The reason is that formula poses a higher allergy risk than say, mashed banana. Maybe you could try substituting one of the bottles with a little mashed banana or some other wholesome food and see if that works. At home, you can keep solids away for months to come and then keep them simply experimental for the next year even. If my son were at daycare I would probably think about this instead of formula, it just seems to make more sense, especially at 4.5 months. Of course it's up to you and how you feel about it! Good luck!
To free us from the expectations of others, to give us back to ourselves - there lies the great, singular power of self-respect. ~Joan Didion