Still nervous

My baby isn’t growing a lot he is active tho but isn’t gaining weight but I am.. by the doctor measurements he lost weight but I gained like 4 lbs in a week which is insane to me. So is there anything that I can do to help him grow and gain more weight? I’m going to be 35 weeks on Monday and each appointment I go into could be the appointment where she says I’m staying and getting induced so anything at this point would help. I already got the steroid shots for his lungs now it’s just seeing how far they will let me go cause the placenta isnt doing well. So any advice any tips is really appreciated. Cause my doctor just says you are doing good and didn’t think I was going to make it to 33 weeks and was blown away i made it to 34🤦🏼‍♀️