Weight gain

I'm 29w5d when I went for my mthly checkup. Took my weight as usual and my gynae said I should still watch my diet. I only gained 1-2kg so far 🙄 No idea how else to watch my idea when I can't eat normal meal cos I feel full really quick even with a very small meal

I am at week 27. Since week 25 my weight gaining rapidly.... 500-1 kg per week. It’s so scary. Before that I didn’t gain at all...