my lg watched me eat for weeks before i started weaning at 21 weeks. when she started having full blown screaming fits stretching to reach for my food at mealtimes thats when i started giving her foods, few other signs are as obvious as that lol. they drink lots at growth spurts and tbh i think a lot of ppl give rusks in babys bottles just to try to make them sleep thru, thats not for the babys benefit, its just for the parent to get more sleep. theyre only little for a little while so i wouldnt rush to move on to the next stages, just enjoy them as they are