other’s opinions on my parenting

My baby girl is 6mos almost. I’ve been wanting to wait to get the okay from her ped to start her on solids. My MIL gave her a slice of apple at 4mos and this weekend my husband gave her a taste of his popsicle. My husband had my back when my MIL gave her that apple but this weekend when I told him not to do that he kept telling me that it’s fine and to relax. I could tell my MIL wasn’t too happy at the fact that I didn’t like the whole situation. I never have any problems with her but I’m starting to feel that she doesn’t like my parenting style. I can just feel this tension starting to build up. For my baby shower I received 2 walkers, one is at her apartment. I honestly don’t plan on putting my LO in them since I did some research and found that they can do more harm than good but idk how to tell both her and my husband that. I know my husband is gonna be upset with me but I feel like it’s the right thing to do. I’m a first time mom and I know that I might just be overreacting with everything but this is the way I want to parent. It’s not like I’m hurting my daughter by not putting her in a sit in walker. And I KNOW I’m not doing anything wrong for waiting to get her ped’s approval for solids. But I just can’t help but feel like everyone is disapproving of me. It’s just so frustrating feeling like I’m alone in this. Is it bad that sometimes I wish it was just my daughter and I? Not having to worry about upsetting my husband for choices that I think are best for our daughter. It’s not like he checked in with me when he gave her some of his popsicle. Or tried to push a paci on to our daughter even though she hated them (which he always attempted when I wasn’t around because he knew it would upset me) I sometimes feel like things would just be easier if it was only the both of us :(