Honestly, at 2.5 years old, kung direct latch pa rin siya and hindi pa siya sanay sa bottle, it might be tricky to transition ngayon, pero if kailangan mo talaga for work, the wide-neck bottles like Avent are great dahil mas parang breastfeeding ang latch at madaling linisin. A few of us tried starting with Avent around this age, and some kids adapted, pero some preferred staying with the breast talaga, so walang guarantee hehe. For budget-friendly, check Lazada or Shopee for authentic Avent, mas mura there than sa physical stores, and maganda ang promos especially sa baby sections. Make sure meron verified seller badge and may reviews na maraming parents, para sigurado na legit. Good luck sa return to work, mama!